I’ve broken up with my long-term boyfriend recently, but we can’t stop talking since the break up. I made it clear to him that I just wanted a casual/physical relationship (no labels), nothing serious. He was completely fine with it when we agreed. While casually seeing him, I was also fooling around with other guys. When I told him about it, he seemed heartbroken. I don’t want to hurt his feelings but I also understand that we agreed on having just a casual relationship. Any suggestions?