Threesome

So I had a threesome with my boyfriend and my best friend yesterday, and I personally wasn’t a fan of it cause my boyfriends finger were in another girls vagina. That just bothers me. And he wants to do it again but actually fuck her this time. And the thought of my boyfriends dick in another female just bothers me. I tell him I don’t want to do it again and he just says that I’ll get more than her and that if I don’t like it this time we won’t do it again. I don’t think I’m wrong for saying no cause it bothers me I don’t want to let him down but like I just can’t do it and don’t know how to get that through to him