He blocked me randomly and I’m confused!!!

Me and this guy were talking for legit months like going on 4 months and everything was great!! But this past week he blocked me out of nowhere?? Like on everything. And I contacted him from a friends phone asking why and he blocked her too. I just don’t understand. I’m surprisingly not super sad about it I’m just more in shock and confused? I have no idea what happened and I’m kind of worried about the worst possible scenarios because I have NO insight to this situation. We were completely fine the night before and then the next day I wake up and I’m blocked... lol. There was no signs of him having a girlfriend and I have no idea when he would even have time to meet a new one?? But I guess you never truly know anything. Anyone been in this situation and have insight for me