heartbroken and lonely

i met my SO over the summer and fell for him immediately. he’s in the marines and the base he was on for training was almost an hour away so we only got to see each other on weekends. almost two months into the relationship, he finished up training and moved back home (he’s from seattle and i live in virginia). we went 5 months without seeing each other because flights are so expensive and i’m in school, so we had to wait until i was on winter break. we talked constantly about our future and we planned on spending our lives together. i told him he couldn’t propose until i graduated from college (which is in a year from now) and he told me he was going to propose as soon as i had my diploma in hand. i’m not the type of person to rush into relationships or fall in love quickly, but i fell so hard and so fast for him and i was genuinely excited to spend my life with him. after my trip to see him in dec/jan, we had to wait two months for his trip out to visit me. i thought things were going amazing. my family loved him and they all got along so well. we stayed at my family home for a week while i was on spring break and then he came back with me to school and was there for three weeks. things were weird after he left, he was usually very affectionate and open about his feelings for me and we talked constantly. i assumed he was just busy with his family and work after being gone for a month, but then out of nowhere he texts me at 2am a week after he left to break up with me. he says that he loves me as a person, but is no longer in love with me. i had plans to fly out to see him for his birthday in may, so only another two months to go. but he said that he can’t handle the distance because not having the physical aspect to our relationship is causing him to lose feelings. we were together for 10 months, planning our future together, and then all of a sudden he’s no longer in love with me. i just don’t know how to move on from this. it would be easier if i had more friends, but my one good friend is a full time student and works when she’s not in class so she doesn’t have a lot of free time. so i have essentially no one to keep me distracted now. i already struggle with fairly severe depression, and now i find it hard to even get out of bed most days because i’m just so lonely and i feel so empty inside without him. i constantly catch myself wanting to text him and having to remind myself that i can’t. we both agreed that we wanted to stay friends, but i told him i would need time to move on first. he also said maybe we could try again in the future. and i don’t want to get my hopes up, because that’s the last thing i need, but i can’t help it. all i want is for him to realize he made a mistake and come back. it’s just so hard having to replan my future now that he won’t be in it. i just don’t know what to do with myself..