u/ImFastAsFuckBo

So I go to university and I have a circle of friends (8 guys) we have been friends for 2 years or so. We were getting along great till now. It's been like 3 weeks since I feel like they just stopped wanting me to hang out with them. I mentioned 8 guys but for different reasons ( distance, having a steady relationship etc.) 4 of us used to be the core group that always meet up and hang out. 2 of them were really close and I was closer to the other guy so we always hung out 2/2 or all 4 of us. But lately they have been hanging out without reaching out to me and it happened so much last couple of weeks I think they just dont want me anymore. What I dont understand is what caused this. We didnt have a fight or I didnt make something to make them upset It was going as usual . It felt like the guy who always called me to hang out suddenly stopped caring about me. They send me photos on snapchat when they hang out and they dont contact me forehand so I think its intentional. I'm used to friend groups falling apart when they go to different places (school , city etc.) but it's a first for me to get sidelined like this. They hang out with the guys outside the core group more than they do with me now. I dont know what's wrong with me. I have been crying for an hour now. Did they silently left me out?