Thought I found love at Nordstrom rack

I was at Nordstrom rack in uptown Houston by the galleria and I met the most handsome man 🫠 when he saw me he said hi and we exchanged a few words and we both went about our business. Then by the time I checked out & was starting to exit he asked for my number while he was in line it was the cutest thing. I could tell we were both a little nervous, but I still haven’t heard from him and this was 4 days ago. Now I’m wondering if I put my number in wrong, or if he forgot my name, or if guys just take numbers and don’t hit you up? I never had this before and I’m so irritated lol. I’m honestly a hopeful romantic so I was just looking forward to connecting but idk I guess I just move on.