Mommy, step on me, please

Now that I have people's attention I wanna ask something.

Whenever I imagine myself dating a guy, it never goes any further than cuddling. This guy I had been friends with for 4 years asked me out and I rejected him. I proposed to my friend the next day while he was there watching. I have no problem imagining myself making out with my friend, but I almost puked whenever I imagined making out with the dude who asked me out.
(Note that the friend I proposed to is a girl.)

But when it comes to 2D men, I can't help but to simp, like Nanami from jjk. He is one fine man.

Um, is this being lesbian or some shit? Idk if y'all lesbian girls out there can imagine yourselves cuddling with a dude. I can do it, but it never goes beyond that. I am fine with sexual relationships between me and another girl, but I can't handle it if it's a boy.