I am a guy. My girlfriend loves sex, at first it was the normal stuff. Then wanted to be adventurous. Now she wants but stuff. I love her. I'm really not up for that stuff. When I say no. She gets abusive. Then she says she will hurt her self if I leave. I don't want stuff inserted into my ass. What do I do? I love her. I'm scared to say no. I can't leave her.
Hi D3pr3551on, from what you have told us, it seems that your girlfriend is not respecting your boundaries. Have an open and honest conversation with your partner. Explain what your boundaries are and how her wanting to cross them is not something you are not comfortable with. Try not to be confrontational because that would put them on the defensive and the resulting conversation would not be productive.
Also, her behaviour towards your turning her down is abuse, let her know this. You have autonomy over your body and nobody should force you to do things you are not ready or willing to do.