Why did he block me like that?

Bratz1211
Me and this guy have been speaking and seeing each other for 4 months! Things have been going great! He’s very affectionate with me and invited me to his house. We talk everyday and always have lots to chat about. I saw him every weekend nearly. So I recently went to see him every thing was going well! He kept on wanting to hug me and stuff. So I left and the next day I texted him these medications that can help w his haye fever, and he texted back “I’ll have to give them a try x.” And I left it on deliver for 2 days, as I was genuinely busy and needed space, so he then ended up blocking me, as I didn’t open his message! Why is he being so dramatic? We’re not in a relationship for me to answer him straight away, I just got busy and overwhelmed.
Why did he block me like that?
25 Opinion