Storytime. I dated a guy. We broke up. That was 2 years ago. I'm more in love with him now than I was before. Help?

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?
Storytime. I dated a guy. We broke up. That was 2 years ago. I'm more in love with him now than I was before. Help?
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