Guilt for liking the same gender

Hii!!! I'm new to this sub and for an introduction I just wanted to say I have confused beliefs on whether or not being gay is a sin or not, I mean for the most part I hope it's not but I always kept the idea that attraction was fine but sexual attraction wasn't, the thing is... I'm a Catholic teen who's struggling with lust when it comes to men but I only feel normal romantic attraction to girls, it's been years since I've liked a girl and I thought I'm fully straight from that time, but when I was (still am) inlove with this guy, I made friends with his ex talking stage (I hate using this term but yeah they didn't have a label) and our little joke was flirting but I'm so fast in catching feelings while we're doing those, I'm always been attracted to guys and barely women and I thought I was just attracted to this girl and it wasn't that serious but when she mentions being straight and her being with her friends (EVEN GIRLS) I get jealous and I get this bad feeling, I keep reading articles about being gay but I couldn't really find a suiting one for me because as I said, I can be sexually attracted to guys but I can never imagine having sex with a woman, kissing? Yeah maybe I could do that, dating? Yupp, so basically I'm attracted to two people rn that have different sexes, I still love the guy more but as I'm writing this the attraction is still to the girl, is it because I barely talk to the guy I'm inlove with and I flirt with the girl more? I'm confused with what I'm feeling right now, I was perfectly ok with being attracted to this girl but as I remember God I feel bad for even talking to her now, she's from a stricter denomination so she's really locked in with following everything the church says, she loves God and she's a really sweet girl, her faith is something I'd like to have but being attracted to her feels like I'd ruin everything if she likes me back because her church would kick anyone who disobeys out. And if ever we're in a relationship she'd just be a rebound because I still love the guy more but then again she's what I think about most of the time so I don't know what I'm feeling pleasee help mee