Something has seriously fucked up and its left me distraught, an online friend for years had went suddenly mute since Janurary, but around march onwards noticed they were playing steam games almost religiously, I also worked out they stopped using skype (our old only form of chat) we used to talk on somewhere along the way and could only see them on steam, they claimed they had a discord but when I asked weeks later for their info they claimed they forgot, but that was before Janurary and they would often forget details, often changing skype accounts.
Anyway cut to April and I managed to force them to say something by trying to join a game in progress, game booted me out and they gave me "not now playing with friends will talk later", the only thing they've ever said since Janurary.
During this time their partner (who I knew existed but they would never tell me who it was, turned out it was a friend I knew, its a long distance relationship) contacted me, told me they had the exact same issue despite them being romantically linked, so I decided to think maybe they just needed time away from everyone (despite playing steam) and gave them a present, a present I thought they'd like, few days later they sent me a message on steam basically saying "oh I liked it, it was thoughtful, current I am being blackmailed but its almost over"
I freaked out, told their partner, we had theories on who was involved (but not someone we actually knew), and I relayed this back to them offering help as well as sharing info they had together (they talked about me in private it seemed, stuff that I should have known but turned a blind eye too despite the years of friendship) just to offer some transparency.
Then they blocked us, she blocked her own partner despite 0 communication, me despite only a few lines between us, and all associated friends from over the years.
What should I assume here, do I assume they wanted to start fresh, or foul play?