My best gay friend is dating a guy 41 years younger

Just seeking the opinions of others about a situation I'm feeling quite uncomfortable about. My best friend is (like myself) gay. We met online but there's only ever been friendship between us. He befriended me at a time when I was very down, after my partner died . Since then I've met someone else and I'm living with him. I'll never forget the kindness of my friend.
Recently he has told me he is dating a 19 year old guy, my friend is 60. He has another friend who is in a similar age gap relationship , in fact they're married, which is a nightmare . The younger guy doesn't work, is constantly on apps to meet other guys , and playing games on his computer, it's a father son marriage.....
I know not everyone is the same, but I feel this age gap is too great, I'm so worried my good friend will get hurt. I haven't met this young guy, so I know I'm jumping the gun but I need to be prepared. My friend is very set in his ways and I doubt he could accommodate anyone in his life never mind a 19 year old who hasn't started his life yet. At least this 19 year old is hard working from what I'm told.
My partner has a son slightly older than 19, and he says he would be very unhappy with such a relationship.
Any opinions will be gratefully received .

 

Thanks for your input everyone.
My friend has more or less always been out, he lived with a guy (a couple of years younger than himself) for quite a few years, and this was at a time when it wasn't an easy thing to do . They separated about 10 years ago. I've known him 5 years , he's a very kind and generous guy, I've never known him date anyone, but I know he's on certain apps and websites . Some other gay friends of his always joke about him liking younger guys , but this has quite taken me aback.
I would never want to lose his friendship , likewise I doubt he'd want to lose mine, and I'm being honest with him by saying I'm not comfortable with the situation , and I don't want to see him hurt.
I really don't want to meet this teenager , however hard working and genuine he's coming across to my friend. He's apparently quite different to the other lazy, attention seeking youngster who married the other friend (hope you're all keeping up ! ). But I still can't approve, and my own partner has said he doesn't want to entertain my friend and the teenager at our home , or to meet them elsewhere.
In my heart I hope it all fizzles out soon. I think I can only offer support for when the fall out occurs. Hopefully I can still see my friend by himself, the 19year old lives a couple of hours away from here .
Thanks again guys for your advice , I was thinking maybe it's me being a bit conservative about things.

---------- Post added 6th Jun 2017 at 04:53 PM ----------

PatrickUK, you asked if my friend would be up for taking advice. He will listen to me but do his own thing, he's a bit stubborn and not really up for acting on advice. Not from me anyway. He has a friend (part of a long term gay couple) who he thinks is the oracle on all matters though. I know this friend but not well enough to speak to, out of the blue. I don't even know if he's aware of the situation yet, but I know he doesn't approve of the other friends marriage to the 20 year old . So maybe some disapproval from there might help .

 

Chip, I agree it's unhealthy for both people , my friend is not just coming out , and there doesn't seem to be a pattern , unless there are aspects of my friend I'm not aware of.... the teasing about liking younger guys concerns me . I thought maybe that referred to just a few years younger (my late partner was 5 years younger than me ).
I'm just hoping this is a transient thing, my friend has always seemed such a decent and kind guy , we've joked together about guys we fancy, but I never had the impression he'd ever seriously date someone so very young .

---------- Post added 6th Jun 2017 at 05:15 PM ----------

Angeluscrzy, I was disturbed when a guy 12 years younger wanted to date me, I just wanted a friendship, he wanted more. I just couldn't understand why .
My 60 year old friend and his teenage friend have a common interest in cars. I hope it's enough for them, then maybe the teenager can tolerate my friends habit of falling asleep after every meal and while watching tv.
I'm trying to see the funny side , I have visions of my friend dusting off his white suit and his medallion to take his new friend to the disco . Hopefully one day soon I can tell him that, all in good fun of course !
But for now it's disturbing.

 

Thanks everyone, for your input. It seems I can only support my friend, and most of you feel the age difference is way too great to work. The teenager is working , but still lives at home , is not out to anyone , and has never had a gay relationship. He's got a lot of exploring to do , lots of things to come to terms with , without devoting himself entirely to a relationship with a massive age gap . My friend seems to think he can help the teenager come to terms with his life ...... I'm not so sure .

 

I've spoken to my friend, said I'm not comfortable with the situation but told him I wouldn't be a friend if I lied and pretended I was fine with it. I'm afraid he'll get hurt, and I'll always stand by him , assuming he wants me to, and I'd never be a "told you so" kind of friend.
I guess I'm afraid of losing a friend too, I'd find it difficult to meet up with my friend and his teenage date , and my partner would just not agree to meet up (he has children of a similar age and finds the situation alarming).
Difficult situation , and I'm grateful to you all for your advice.

 

Hi resu, and thanks. When you say friendships should be about common values, do you mean we should just concentrate on the values we share? I'm worried it could be difficult being around a 60 year old and a 19 year old , I'm uncomfortable at the thought. Or am I over reacting?
I hope my friend wouldn't think I'm being spiteful, he should know I'm not like that. I'm bracing myself for him to move on though, he has other friends such as the 61 year old who has married a 19/20 year old guy.

 

By way of an update..... I am just back from a short walking holiday with my 60 years old friend. We have done this trip every year for a few years , and planned it ages ago. It was an opportunity to chat, and my friend knows my concerns about his friendship with the 19 year old. My friend has actually only met this teenager in person once, for 2 days, so it's hardly a committed relationship ..... they live 2 hours apart , at least.
They don't speak in person, or face time , or Skype, because the teenager lives with his parents and he's not "out".
The texting was constant, starting before 6 am each day and going on until midnight or whenever my friend fell asleep. We were sharing a room and I had to ask him to put the phone on silent, including the keyboard clicks, so I could sleep. The more I hear about this teenage boy the more concerned I get, not out, no real friends, very lonely, this is his first gay friendship . My friend is also lonely, and I can understand how he feels, I've been there. But this isn't the answer.
I'm invited to meet this teenager ...... he's visiting this weekend for just the second time, but I'm busy. I'm glad too, as I still feel uncomfortable. So many of my friends other friends are saying what he wants to hear , that it's fine and he's lucky to have a young friend. I'm afraid I still find it inappropriate ..... this young innocent needs to find his way towards coming out, and meeting other gay guys of a similar age , to develop, gain confidence, feel what it's like to be in love etc........ not to seriously "date" and commit to a relationship with a guy 41 years older. Friendship maybe, but a sexual relationship, no way.
Just my feelings though .

 

Ps I didn't make it clear, above, my friend is hoping for a long term, committed relationship with this 19 year old , and while I didn't ask outright, I'm sure sex was involved on their first meeting .