I [24m] moved in with my girlfriend [24f] a month ago and since then my best friend [25m] hasn't spoken to me. We were renting a place together on an 18month tenancy. The apartment was kinda bad with lots of noise from the road.

My girlfriend asked if I wanted to move in with her so we can start saving for our own place. I told my friend this is what I wanted to do and moved out a month later. I offered to pay my rent until he was able to find someone to take my room but he refused and just moved out completely and went back home to his parents.

He hasn't properly spoken to me since. AITAH for moving out?