my love interest

oof so here we go: the boy who i am kinda in love with (let’s call him alex) is my friend’s boyfriend. he also happens to be my ex’s best friend. here’s the tea. i would see alex around school quite often but i never really knew him. he would hang around outside my 6th period class and i always thought he was cute and adorable and whatevs. so fast forward to a few months i met a boy in one of my classes (let’s call him nick). nick and i start talking and i’m sort of pressured into a relationship with him. i eventually get to meet nick’s friends. one of which is alex. as i get to know alex more (keep in mind i’ve had a crush on him for a while) i start to realize i like him a lot more than i should. eventually i am introduced to his girlfriend (who i didn’t know existed). we start talking and she’s a super sweet girl and she’s amazing. we become friends and alex is happy that we get along. nick and i have broken up but no one knows i like alex. it’s gotten to the point where nothing i do can get him off my mind. i know i shouldn’t like him but i can’t stop anymore... help?