Did I do something wrong.. again?

There's this guy I used to like who used to like me. We used to talk a lot and he would tell me all about his day and everything that was going on in his life, and we ended up liking each other. Nothing actually happened between us but eventually I started liking on of his friends instead and I think he found out. He never mentioned it but I thought he still liked me and he was trying to keep getting me back because he would always text me and talk to me all the time, but now he never texts or IMs me anymore and never says anything when we do text and talk to each other. Did he stop liking me?