I feel this all too much. Although I'm not a guy, I do however have social anxiety and I know the struggle about wanting to cry all the time...Lol. I used to think that it makes you weak, but it doesn't. The best advice I can give, from one person dealing with social anxiety to another, just let it out. Don't hold it in and don't bottle up your feelings, it makes things so much worse. If you need to cry, let yourself do it. It does help a lot of the time.