i feel pathetic!!

My SO and I were having sex and he started rubbing my clit while I was riding him. It felt so good and I came so hard and for some reason I felt horrible and embarrassed immediately after I came, I started sobbing and couldn't stop. I was in an emotionally abusive relationship before him and never felt like this before, not to the point of crying at least. Has anyone had an experience like this before? It's been three years since I left my ex and two with my SO. Is it normal to feel like this that long after ending the relationship?