So I'm like 100% gay...but there's this girl...?

This take a little so just bare with me...So like I said I'm 100% gay. Like zero ual attraction to women whatsoever. But there's this girl. We'll call her Sammy. Well Sammy and I are like best friends. She came into my life right around the time that I was realizing that I'm gay. And she's one of thoes really flirty girls. She just started talking to me out of no where and telling me that she likes me. And I was confused at the time what with me not be sure about my uality. So I just went along with it. Said that I liked her. Which I kinda did. And we were talking for a while and probably about a month into our relationship(close friends/flirting) she tells me that she had messed around A LOT with other girls. Like namingat least 15 girls she's been with. Along with some guys. And so I told her that I'm bi. Just because I didn't understand if I was gay or not. So I tell that I'm bi and the few guys I've been with. And so I asked her if she would call herself bi or what and she said "No, it's just a sin that me and God have to work out." So idk. And I really start to fall hard for her. And so I tell her that I've never felt this way with any other girl(the truth but not the whole truth lol) and she tells me that I was in love with her. And I kinda felt that I was. So here I am loving this girl, even tho I'm gay, and I feel no ual attraction to her. We kissed a little but I didn't enjoy it. She tried to get me to finger her but I wasn't going to. And so we kinda just drifted apart as far as lovers go. But we're still close friends. We flirt still but that's just her nature and me legitimately flirting. And now she has this bf and I'm jealous as hell of him. Like I see him touching her and I wanna walk over and pry him off and just hold her. And this is the only girl I've felt this way for. So idk what's up with that. Like, does it make me bi? Or what? Any similar experiences? Please help. I'm just...confused...