Why shall I do! ☹️💔

My first love was a boy we will call him m and we have been on and off for about 2 years but he has treated me a bit bad. But when he’s nice he’s the nicest person ever and we get on so well. About a month ago this boy called a started to like me, I’m not speaking to m at this point. I like a back but I’m scared he’s going to ask me to be his girlfriend when I still have feelings for m someone please give any advice I’m stressing out 😐😐😐😐😐