He already has a girlfriend

I’ve had a crush on one of my friends for a while now and promised myself that I’d tell him before summer break which is in about a week. I was about to tell him over the phone yesterday but was really glad I didn’t because I found out that he’s already seeing a girl today. He seemed happy to finally be with a girl he likes, he got rejected pretty hard on Valentine’s Day by one of my other friends. If anything I’m happy for him, he deserves someone to talk to, I know he’s had it rough. I don’t think I’m ever going to tell him or that he’s ever going to find out. I’m ok with being a supportive friend, and happy for him.