I'm a straight guy (or I think I used to be), and I think I like my friend

I apologize if I come off as ignorant, I'm not really used to this.Ok, so I'm a 21 college dude, been straight my whole life. Had a couple girlfriends and I think sex with girls are awesome. I'm turned off by the idea of two men having sex (have tried watching gay porn but eh). Not really curious or eager to try.But fuck, I think I'm in love with a guy. Like, I don't really know where it began. Maybe it was during that time when he was drunk out of his mind and crying softy while hugging his knees. Or when we pranked our friend together and he practically twinkled at me with those dimples. DIMPLES. Why the fuck is he so cute sometimes??? Like he gets embarrassed so easily and tries to hide it but his red ears sell him out every time. Also, he likes to wear this cap which makes his ears bend like an elf and it's killing me. But he's so annoying. I hate it. I hate how I used to be able to treat him as a normal bro but now even when we're hanging out with our group of friends, I can instantly spot him in the crowd. And he always catches my attention, no matter whatever the fuck he's doing. And when he smiles without saying anything, he shines like the fucking sun.And he's bisexual. Apparently. I don't think he's ever gotten together with a dude, but he tells us (under some alcohol influence) that he doesn't really care about gender. He's single. Friends with everyone too. Flirts when he feels like it, but seldom/never flirts with close friends, no matter guy or girl.I'm so confused. I still can't stand gay porn. I still get off by watching straight porn. And imagining me mounting him/him mounting me feels so wrong. Really, really wrong. I don't like seeing dick, i get turned off. And I don't really like to imagine him naked like I do with the other girls. But sometimes I see him out of breath and face flushed after working out, and I imagine his O face. Or him jerking off. Me jerking him off while he crumbles beneath me, shirt disheveled, eyes shut, biting his lip. And yup, I get turned on by that. I don't know if this is normal, I don't really know what to do, these feelings won't disappear. I don't really care about other girls anymore. Straight porn is good, but not as exciting as it used to be. I tried distancing myself, but it doesn't work especially when he's just so friendly. I just wanna hang out with him more and more.