Is it normal to enjoy lesbian porn more than straight porn if i am straight?

Okay , so i am a 19 year old college student and I am straight. I love sex. Ive had four partners, one as recently as 3 weeks ago. I have had tons of boyfriends and I think guys are hot. but for some reason lesbian porn turns me on. I rarely watch porn but sometimes when I am alone I turn it on. I am not sure if its because I love oral/being eaten out and they do that more in lesbian porn than straight or what. I have never been with a girl or even thought about it other than during these random porn times. Is this normal?