Guys... I need a little adivce... sorry if the story is kind of long :/?

Okay! So I ugh, met this group of amazing guys all one night when my best friend had set me up on a blind date. She and I went on a double date, it was me and my blind date, her and one of her old high school friends... I met all of their friends the same night i met my date and my friend's date... I thought one particular guy was good looking and I also thought my friend's date was better looking than mine... We ended up getting away from the guys and started our date.. towards the end of the night my friend and I end up switching dates (haha) everyone was cool with it. Anyway me and my friend's date (now my guy) ended up dating over a month.. we recently broke up and through that month I ended up developing feelings for one of his friends.. I'm not sure what to do.. I used to cook for all of them and me and that guy even celebrated our birthdays together... He really interests me but I'm not sure if he'd wanna see if things would happened between us because I dated one of his friends. I wouldn't want to ruin a friendship but that guy is really awesome... What should I do?