Why did he unfollow me and unliked my stories on insta?

We have been chatting for an year. i like him and he showed interest too. He texts me usually first. One month ago he followed me on insta and liked all stories i posted. Few days ago he flirted with me and said I don’t talk to any girl except u (i know he was trying to love bomb me). but Then he said can we do sexting. I said why would i do it, I don’t like this. He said but in past u did it with me (we did sexting 5months ago but I stopped cause i felt like he was objectifying me). I told him i did cause this way i used to get your attention more. Then I said so u talk sweetly with me so u can talk dirty to me? He then said “no and i think of u as friend only. And i asked it as joke.” Then he deleted our whole chat from both sides and He immediately unliked my all stories he had liked and unfollowed me on insta and then he deactivated his ig account. After that day he has been acting cold to me. After 3 days he reactivated his account and blocked me and after few hours unblocked me. Then texted me but was trying to act like friend and called me “buddy”. Why is he acting like this now? Is he doing this on purpose or he is not interested in me now? Is he angry at me?

Why did he unfollow me and unliked my stories on insta?
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