My gym crush disappeared

So I’ve had a crush on this guy at my gym for like 6 months or so. We always snuck glances at each other and I have talked to him a few times and know his name. We had the same gym schedule too for the most part and I was getting up the nerve to ask him if he was single, etc. Well, it’s been over a month and now no sign of him even on the weekends. The gym is my second home too. Anyhow, I’m so sad that I’ll never see him again. I know his first name but not his last so I can’t look him up on social media. I know it’s just a gym crush, but I really had a thing for him. Any words of encouragement? Y’all need to make a move and not wait is what this has taught me.