I've Been With My Boyfriend for a While Now and He's Bad News

I have a large group of friends back home and happened to have a history with one of them We had a fling a while ago, which went on much longer than it should have. This ended up a couple this ended a couple of years ago due to wanting to remain friends as it was starting to get complicated I know he is bad news Nothing had happened between us in years and I've seen him multiple times since being in a relationship and it's all fine Yeah, although I can't deny there is a bit of an underlying tension because of the past. My boyfriend is aware of the history Okay, but knows I will remain friends. It made me miss all the fun times we used