You are not a bad person and its not wrong. Establish what you are comfortable with and what you are not in your relationship, dont wait till it happens or wait for surprises. Be open, honest and upfront about how you feel. Thins easier this way.
Communication is very important in relationships, when both people get along and understand each other then they are both happy. Most problems come from stupid misunderstandings or assuming things. Talk to your boyfriend, be open without judging or controlling, just express yourself. Good luck.
This is what killed my relationship. My best friend and I have known each other for 7 years. I met my ex 2 years ago. She basically told me that I had to choose between her and my best friend because she was insecure about it. I chose my best friend. However, I understand if you don't want him talking to a bunch of girls that are considered sluts.
You have trust issues, If you can't trust your boyfriend why are you even in a relationship, it's all about the trust. But that doesn't make you a bad person, you're just insecure. Calm down, if he really loves you then he's not going to cheat on you. But hey you never know, he might cheat on you. Haha!