Why did this guy block me on Grindr?

I do not understand people lol. So I live in Dallas, TX and about 3 months ago I hooked up with this guy who was in town from Austin visiting his family. He told me I was very cute. We ended up chilling and talking for about 2 hours and then had sex. He lasted about 1 minute (literally) so I took that as he thought it was pretty hot. I messaged him a few days later and we had some small talk but that’s about it.So he’s back in town for Christmas break. I saw him on and messaged him something like hey what are you doing for the holidays. He messaged back and said sorry I lost all my chats if we talked before. I said well we actually had sex. And he asked me to send him a picture. I sent him 4. The same 4 I had sent before when he said I was cute and invited me over.He didn’t answer back in the next hour I was up so before I went to sleep I messaged him and said well I guess you didn’t have that great of a time even though you seemed like it in a joking type message.I get off work today and he’s gone. What is so stupid is I don’t care about guys on Grindr and I already had sex with him. So why would I care what he thinks? I was obviously good enough to hook up with me. But I guess that’s what bothers me so much. It’s so stupid but why would he block me?What do y’all think?