I may be wrong but letting her know before he have a crush on you is better .You mentioned shes a very close friend so there won't be any...
OH,why you said you have no charisma,charm .......???pls don't say that...we all have our own unigue qualities...you are given the responsiblities...
I don't know want to say about it but hmmm,just take it easy...do what u like n wat u comfortable with.......