Best friend decided to ''end'' our friendship, but I know somethings up?

Hello everyone

Long story short, I had an incredible best male friend. I've had a lot of ''interesting'' friendships with people, pretty much every type you can imagine, well not every but you get what i mean.

Our friendship was the best friendship ever, and I know it was/is a friendship people wish to have. I always let him know that i value our friendship a lot, nothing wrong with reminding someone.

Now, around a month ago he got a girlfriend, It took some time to adjust since we wouldn't be hanging out ''as much'', even tho ''as much'' was already barely since he was super busy with his life in general.

Now, me, him and his sister are gamers... well me and him more than his sister, since we met on a game. nothing much to explain there, just a friendship that kept being better and better. Eventually I travelled to meet him, he was already my best friend. But also because the country is Beautiful! It was the best time of my life, meeting him and his family... and I couldn't wait to be back.

now, couple of months ish ago, he told me he had a girlfriend. Absolutely nothing wrong with that, I was really happy for him, but I had a fear for the past couple of years... losing him. Since I've had ''friendships'' (which, they weren't really) and I already felt bad if a friendship of a couple of weeks ended for some reason. So believe me I was SCARED of losing him. Which I think that's normal? Altho i did trust him, but then when he said he had a gf that fear sky rocketed.

everything was fine, I gave him some more space which I thought was nessecary. you know, girlfriend... maybe some more boundaries i don't know. I was willing to do everything so he was comfortable, and that his gf was aswell.

we played games, everything was lovely... he even told me to get another game so we could play that one aswell... which I did, me and his sister were planning on coming to my country when i would return from my next trip...

now couple of days ago, he started being a bit more ''dry'' I guess. which wasnt unusal for him, everyone has their moments. But I felt something was off...

Than some days later, he texted me.. saying hes ending our friendship since he feels like weve ''grown apart for a while now''. My heart broke, since it was my biggest nightmare and fear.

I didn't want to make it more hard for me than it already was, and i pretty much told him that id always care for him and love him as my bestfriend...

But the way he wrote it, was SO OFF!

So after that, I texted his sister, I told her what he said and yk i asked if she still wanted to be friends which i would love but also id understand if she wasnt comfortable with it blabla.

she answered, and blocked me after I texted my goodbyes. it was so weird. So i checked his insta, i was already blocked by my best friend, already removed from pretty much all platforms. there's ONE platform he hasnt removed me from. which he either forgot to, or does it on purpose. for whatever reason...

now after a couple of hours of mourning (literally) I checked his insta on google itself. since it was just SO off.. Cuz I remember a couple of days before it happening I checked his insta for some reason and I saw he had already unfollowed a lot of people, especially good friends/female friends.

now when I checked again he had unfollowed literally almost everyone, except his gf, his sister and their best friend. He unfollowed good friends (including me) aswell? It's just super weird. I know this isn't like him. and theres much more. Like me and his sister were planning on travelling together... we were planning on playing games THIS exact weekend... somethings up. Has this happened to anyone else? did they ever unblock/contact you again with some explanation?