Going through it (long)

So.. my (ex)boyfriend and I just recently broke up. It’ll be 2 months tomorrow (04.19). I’ve had a heartbreak before... my last relationship before him was pretty bad honestly. Very mentally and verbally and emotionally abusive... so it was totally different... this last relationship, we were very happy and everything but he literally just fell out of love and said he’s young and wants to just live his life (he literally just turned 18 a few days ago) and so I mean... for me personally, it was unexpected and it hurt like a mother fucker... my abusive relationship was something I saw coming and felt free once I was out of it... this one just fucking hurts.. we were still sleeping together, which.. I know is an awful idea but it was nice for things to feel normal for the time that we were together.. cause we’d hang out and we’d hug and cuddle and kiss and it would be normal... we’d call each other babe and baby and stuff.. you know? so we made a promise to each other that we’d tell each other if we got involved or interested in someone else... recently he told me he’s talking to a girl from work and he likes her.. that they talk and flirt, but that he doesn’t want to peruse anything because he still wants to be single and he isn’t completely over us yet and he still wants to be able to live his life and stuff. But it’s still really fucking hard cause at the time he told me, we weren’t even close to have been broken up for 2 months yet... it was still just barely a month.. and we were together for 11 months (I know that’s not long but still... a bit fast to be moving on already in my opinion.. especially because things were so good.. or so I thought)

Idk. I just am having the hardest time... I’m at the point where I’ve accepted that we’re broken up. Ive accepted that we won’t be getting back together.. but I’m having a hard time accepting. That he’s already interested in some other girl and that they flirt and stuff.. he works at Olive Garden and I went in with my friend the other day and he literally got mad at me for eating there. It wasn’t like I didn’t consider that she could be there.. cause I did. But I didn’t try and talk to him while I was there in case she was there... also... we were going to go to a Russ concert together and we planned this 2 months in advance and then the other day he told me he doesn’t wanna go with me anymore and that he’s give me my money back for my ticket. Idk. I’m pissed cause of the girl and the concert and just a whole bunch of other stuff. But he’s such a kind guy that I have a hard time staying mad at him and I have a hard time wanting to move forward even though I’ve accepted most of the factors... I just need some opinions.. I feel like this heartbreak is much much different than my one before and I don’t know how to move on but I know I’m tired of sitting here depressed while I watch him moving forward... we decided we still wanna be friends and I’m going to stay with hat.. we ended on good terms and we’re good with each other. I just wanna move on and stop being so sad but I honesty don’t know how.

Sorry if some of that doesn’t make sense. I’m honestly so scatter brained and just sad and done and Idk. I just need tips on how to move forward...