Im... confused?

Me and my girlfriend (both 18) are in relationship for about a month. For me, this is my very first relationship. I'm kinda the "shy, introverted, lonely, diffident" kind of a guy. We both are obsessed with each other, but there are a few things that throw me off and I really need valid opinions from the experienced A few weeks ago, she was at a party, and she got groped (neck kisses and rubbing inner thigh area) by a guy. She admitted to me that she might have lead him on and given him mixed signals while being drunk and as she realised what's going on, she pushed him away Before we got into a relationship, she told me that she never kissed a guy before (even tho she has dated 3 guys) and just yesterday, she told me that she had sex with her ex. About 2 days ago, her ex called her to meet up, and she went to meet him too, without telling me before hand. I don't want to be a bitch about the it but it felt so bad. She also has a LOT of guy friends, like... a lot. She frequently hangs out with them, gets drunk, gets high with them. Being a guy, I know everyone wants to get in her pants There's still more, but these were major problems that are making me mad. I feel very insecure, anxious and scared about this and I don't want to mess this up because of me overthinking.

Im... confused?
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