Depends on the guy, if he seems sweet and cares about who you are, instead of your boobs, then generally he'll want to know that he can care for you. Don't just walk up to him and say "You....
If this girl and man were deeply in love I would say maybe but for now I would ecourage her to stay with boys around her age. If she was 21 and the guy was 25 then THAT would be okay. If I was her I...
take this from me because i am a girl. all you really have to do is be yourself around her, tell her how you feel about her, and to say it just be like "whatever her is, i really like you and i...