Really need your advice!!!!

so my gf spends alot of time online,there are some guys who i know like her.one guy keep jokingly says he loves her etc..she tells him to shut up.and there is this other guy who was saying "be my girlfriend,i will never cheat you etc.. to which she never replied.i asked her about this and she just said that they are stupid and she doesnt even take what they are saying seriously. what you think??
also this question is pretty strange but here goes.one of my best friends who is quiet well known has 2 facebook pages.(his own,and his well known characters profile)anyways on his character profile he one time wrote this status "i love the girls". as normal people commented etc.but the thing is my girlfriend who i just started going out with at the time commented on his status.she wrote "and i love the boys hahaha"..should i be concerned or what does that mean?sorry if thats all confusing

Your massive insecurities are showing.