AITA for not texting him much even though i asked for his number?

okay so over this year i became friends with this guy a year above me and he was always suuper sweet and i got feelings and i assumed he felt the same so i asked for his number on one of the last days of school when i was he was just like… shocked/confused but ultimately was like “if i remember it” then gave it to me so yippee and after school i texted him “hi it’s (my name)” and he just said “hi (name)” that was around late may and nothing was said after that from either of us then finally a few days ago i asked if he wanted to go to a local fair w me my sibling and one of my sisters friends (one of his classmates in the same grade as him) he said he wasn’t in town he was with his dad so he couldn’t go :/ and we haven’t said anything else after that

i couldn’t really judge if he was being dry because he texts so proper (?) he doesn’t have any social media so he doesn’t know slang or anything (he didn’t know what ‘wyd’ meant)

but he replies pretty quick (within like 2-3m) i just feel like a dick for being the one to ask for his number and barely texting him