How to deal with loneliness after a breakup?

I got broken up with a few months ago, I was a mess and we were also about to graduate college. While we are on as good terms as we can, we share lots of friends including my new roommates.

This summer, I’ve been feeling very lonely, and I don’t wanna put my friends in an uncomfortable place by talking about the breakup all the time. I just don’t know what to do. Anyone have any tips on how to deal with the loneliness?