Confused about myself about relationships

Carly

So I’m 23 years old, I have been in a relationship before with a female. Then when they cheated on me I thought what is the point I’ll try and go back to dating guys. Well the problem is… I’ve been with my boyfriend for 2 years and lately anytime he wants to do sexual stuff I push him away because I don’t feel like I want to do stuff with him once I see him naked. When him and I talk about sexual stuff I’m ok it doesn’t gross me out. But like when it comes to females and they talk sexual stuff it doesn’t gross me out and there was one time me and my first girlfriend we grew up together. We knew each other since grade school, when I saw her naked the first time nothing grossed me out. I need some advice! Am I bi sexual? Do I prefer just females? Am I being weird about this all? Am I truly just confused? I hope this makes since what I’m trying to say? I tried my best to word it the best I can.