Me and my girlfriend are on our 4th month, she is saying that she love me, and I know that. And I love her too.
I know that she has many crushes. There is a guy that is cute, appealing to girls and she said she don't have crush on that guy, but one day I found in our group in Facebook a conversation between my girlfriend and her friend, my girlfriend said that she has a crush on that guy, and after that she said to her friend that he should clear the chat history because someone might see it. What am I going to do?

People have crushes on people when they are in a relationship. Its really not that uncommon and not as alarming as it would seem to you. She is with you, and its not like she said "I think I might break up with my boyfriend for him." it's a crush. Big whoop.

I wouldn't confront her about this until this crush is pushed past the crush stage. Otherwise, your just going to cause a whole lot of fuss and problems.

Thanks :)