watch lesbian porn but don't want to date women?

this is really embarrassing but I have to ask. i've only ever dated and been with guys. i feel no romantic attraction towards women and I'd never want to date one- I've definitely never had a crush on one. I have no desire to kiss girls. yet when I watch porn I normally only watch lesbian porn and after I'm done I feel really embarrassed. i don't want it to affect how I perceive women irl. i think it's starting to affect my sex life- whenever I'm having sex with a guy I'm like, am I not enjoying this enough? is there something wrong with me? (even though I'm having a good time). i know that i love going on dates with and having sex with guys so why do I still worry about this stuff? i'm 21 and have OCD if it matters.