He doesn’t love me

My boyfriend is still in love with his ex..

While in a disagreement I brought up that he was still hooked on and he told me that he definitely wasn’t, but I know he is and it hurts. It was in like April he had blocked her in Facebook and he now has her unblocked and was liking her post/pictures from the end of last month... he doesn’t know that I know that but when it broke my heart when I found out idk what to do. I really love him but I know he doesn’t love me back..