Is it a healthy relationship ?

My boyfriend and I have been together since June but have a VERY long history of our “love” he was my first love and we were together for about two years but I just knew I need space to do my own thing and grow as a person. We came back to each other after a year and a half and we have been together for 5 months. Things have been just off. At first it was great but now I don’t know? He seems so annoyed with me when I tell him that something he does bothers me or hurts my feelings. This morning I canceled our plans because family I don’t get to hang out with made plans with me and I felt bad. He immediately started sending me hurtful messages and was telling me that I should have told them I was busy but I just thought he would understand. He just kept saying talk to you later bye but it was just so rude. He finally said sorry and when I told him sorry he just said ok. Idk I’m gonna upload the rest. I just don’t know what I should do. I feel like our relationship is slowly falling apart but I just don’t think it’s at that point yet. I don’t want to break up but idk if it’s best. Btw I’m in high school he’s in college and we don’t live exactly close but it’s a decent distance.