BREAK UP ADVICE PLEASE?!? (long sorta, sorry!)?

so, i got broken up with out of NOWHERE by my boyfriend four weeks ago...he was acting so strange the week leading up to it, not texting as much, didn't really wanna kiss me as much as usual, i gotta weird vibe because we were always so in love with each other and everyone said we matched up so perfectly etc. i confronted him about it and he finally admitted that recently he had felt different like, wanting to be with the guys more, getting a little annoyed or stressed out by the littlest things with me. i literally didn't know what to say. he said he was 'mentally burned out' and just couldnt do it anymore...he was really upset and so was i obviously...so something just felt wrong and i asked him if there was anything he left out cuz this was so out of nowhere no one knew abt it...and he said during the year (we JUST got home from our first year of college-him in boston me in CT) he had been a little annoyed with me, but not all the time. im a big talker, and he's a little more quiet...but we were perfect for each other cuz he came out of his shell around me and his friends etc and liked to talk, and he is really outgoing once you get to know him. i always asked him if he wanted more space if i was annoying him with our constant texting throughout the year, and he always said no you're not don't worry etc so basically he LIED to me everytime i asked him this, considering he just told me it had been bothering him for awhile now. so i asked him if everything he said to me this past year was really a lie too and he was like, "no everything was true that i told you (i love you etc), i just thought being kind of annoyed was normal, but then it wouldnt go away when we got home (i had been back for not even 2 weeks). i didnt wanna change you and bring it up", and i was like, a relationship is compromising you wouldn't be changing me, we could have just talked once a day on the phone or something instead of all the time or whatever...you couldnt just talk it out, you just let it get worse? we always talked about little problems we had and then made changes and were fine, we never fought or anything, and he was like "im done with talking things out i dont want to be with you anymore" etc etc and it breaks my heart. i know im young, we started dating our senior year of high school, and suddenly after a year and 7 months he feels this way after being so committed and wanting to make it work? i dont get how he kept feelings in college being a little annoyed, and then comes back for summer and suddenly they all go away. you can ask anyone, we were really happy and mature for a couple our age. i know i can be a little much, but i've been working on not getting as stressed and stuff and i am happier etc with dealing with my stress in different ways now, so idk if that was a reason too for his annoyance, but im still so shocked this happened, i know college changes ppl but i feel like this could have been avoided. we complimented each other so well, i can't picture finding someone as good as him and he was/is my first love. im giving him (and myself) space but i still kinda want him to come back even though i know he wont change his mind because he starts co-op this coming year at school so he will be working and stuff. i dont know what to do, im really upset still even though i've been trying to stay positive because he seems like he's too overwhelmed and immature for a relationship now. like i said i know college changes people, but i just have this feeling in me that says we were perfect for each other. i saw him yesterday for the first time in like 4 weeks, we talked for a few minutes, i told him i got a new job and was transferring schools (i found out i was accepted right after we broke up) and it was really nice to talk to him, except that i still have feelings for him and im attracted to him :( im scared i'll never move on!! do i keep trying move on because he's too immature to handle what a relationship entails during this point in time and maybe we just need our own space, because i feel like i never will move on and it makes me so sad! or do i try to talk to him about how much i can't stop thinking about him etc and try to ask if he will come back because he will realize that he ruined a really good relationship on a stupid annoyance that could have been avoided? i feel like it's pointless cuz if he really wanted to be with me he would find a way to talk to me and let me know. what do i do?! i'm still so upset and sad inside some days, and just feel like i'll never find someone better than him. thanks for your help if you respond, dont be afraid to be honest, i NEED it. <3