I’m 16 and a junior in high school.

I’m currently talking to a 15 year old freshman. Things have been going good so far, been snapping for a couple weeks now. Lots of IOIs

Today I asked her to hang out for the first time. She said yes but a guy she used to talk to (18 year old junior, most popular guy at my school) told me I shouldn’t because he still likes her

What the fuck? Me and him have some history, used to be good friends, something happened, and we fell off. Basically we have not liked each other for a while

What should I do? I just agreed w him and want to go ahead with talking to her, but idk