tips for a breakup

hey guys, i just broke up with my ten month boyfriend. he was my first boyfriend and the one a lost my virginity to. it was because i have mental illnesses and shouldn’t be in a relationship or put him through my shit and i just wasn’t happy with it, he didn’t take it well obviously but he did get mad and swear at me and made me feel bad about what’s doing best for both of us. i feel better but i can’t help but feel bad for making him hurt and throwing away 10 months of memories. does anyone have any tips and/or support for someone going through the guilt of breaking up with someone? thankyou