Sharing Our Innermost Thoughts

My friend with benefits (who’s not that anymore) just replied to my instagram story, making conversation and kind of flirting with me. When we were together I started to develop feelings for him but he never new it, eventually we stoped talking and having sex. Since we “ended” things/stoped talking he would see me and didn’t even say hi to me, so once as he literally walked through me and didn’t say anything, kept his head down. I grabbed his arm and said “are you polite?!” And he apologised and said that he didn’t saw me. Then texted me saying “I didn’t mean it” “xoxo”
Sooo today he replied to my story and the story didn’t even had that much interest. When he sarted making conversation I was doing my nails so I saw the messages but couldn’t reply immediately so he freaked out saying that I couldn’t say he wasn’t polite If I was viewing his texts and not answering, eventually he understood the reason I wasn’t replying and we were ok, he apologised to me and we started to flirt a bit. Then the conversation reached a point where there was nothing left to say and I just liked the last text he sent. And today in the morning I found out that he removed me from his followers and stoped following me and deleted all of his posts(???)
Is this normal???
I texted him later, if you want to know what it was please ask me in the comments and I’ll tell you. Just because I don’t know if you are that interested
But pleeease help