relationship drama

H
This is the first time iver ever posted on here!! Recently me and my boyfriend broke up, we were together for a little over 10 months and we had broken up two times before. We loved eachother a lot but I guess communication got in the way and we broke up right before winter break over February and I'm actually really happy now, but only one problem. I like someone a grade below me, me and my best friend wanted to go to the store one day and we found a freshman to hang out with so we wanted to go find his other friend and we found the other freshmen that he was friends with and now she has a thing with one of the freshman and I like the other freshmen and I don't know how to tell him. Sorry for the rant. any advice?
Update. My friend told her parents about me and brother so he ended it😞😞😞