S and I dated for 7 months before my most recent ex destroyed the relationship S and I had. We still had feelings for each other. It was obvious. We got together with different people, but after I broke up with the other guy, S and I started talking again. We hung out more, he was my best friend. We kissed multiple times after the breakup. He used the excuse of "it's practice for O (his gf)." It was more than that for me. And I still love him. What do I do? Tell him?