It might suprise you, but most of us are bi-curious. You probably thought about having sexual and/or romantic relationship with someone or anyone of same sex, and so did your girlfriend. The usual signs might be her looking at the naked pictures or videos of other girls, and she also might be reading about relationship with other girls, thinking or talking about it. The best thing to do is to talk about it with her. You also need to know that if she really is bi-curious, it doesn't mean she wants monogamous relationship (relationship with multiple partners) or that she will cheat on you, and you need to understand if she really is bi-curious or bisexual, because if you criticize her for it, it might ruin your relationship.
Just ask her most girls are honest with it
Does the idea of having physical relations with both sexes appeal to you? If yes, then yes, you are. If no, then you, you're not.
No
She was bicurious
if your wantin to experiment then i dont think its bicurious
Tell his girlfriend or tell him to dump her for you
Gay, straight, bisexual, lesbian, bicurious, experimental
You are a sweet girlfriend when you tell him you love him
Tell your girlfriend the truth!
1st tell him to stop and then it dosnt matter if you like his girlfriend or not tell her
Say to her, "You're my first girlfriend."
Ask his girlfriend