How to balance a friendship with my ex with a current relationship?

I have a boyfriend in school who I'm crazy about, but I feel badly for my ex who sees us in the halls all the time. My ex and I were still good friends up until I got a new boyfriend. I cut him out of the picture at that point. I care about both of them, but I don't know how to balance my relationship and friendship without giving either of them the wrong idea.|||leave ur ex alone let him recover you'll just get in his way...my ex always tried to be friends with me before i was ready it became annoying..like u have a man its cool let me be...