Need to blow off steam

First...let me make something clear...I am not a weak person...I try my best to be strong and put up a brave face...I'm a type one diabetic after all, so I don't have a choice..but lately I've been having a rough time...It's not that my sugar is out of control or anything like that...I'm just tired..emotionally and physically. I am currently in a university where people aren't exactly like me...so generally I'm alone a lot...I try to talk to people...but a friend recently broke my heart...and I just don't relate to those people...but isolation has broken me, other friends I used to have are studying at different universities and we don't talk anymore...I always see photos of everyone having fun and enjoying life..and I'm just here alone...I feel like the world forgot about me and that no one cares about me anymore...I'm sending messages to people that still live around here and they always promise to go do stuff with me...but it never happens..I'm starting to feel like I'm annoying them and I'm trying not to text them anymore..but I literally have no one else to talk to...my parents think I'm overreacting. Then there's this guy...Yep...a guy I like...and I've liked him for years..but he lives in another country and only replies like two days after I text him...Which I usually don't because then I get glued to the screen waiting for him to reply, and it really hurts because I had hope that he might like me back...but I think he sees me as a kid...I'm not even sure he thinks of me as his friend...I consider myself to be pretty and a mostly cheery person who always goes out of her way to please people...I'll admit that...I hate hurting people and making them feel low...and I can't get over this guy...I hate that I think about him all the time...but sometimes something happens and I get hope again...but that hurts me even more when realise the next week that it's not going to happen...I also don't drink alcohol or do any of those things..though I do love clubbing and dancing...I can have fun without alcohol, but I've found that people think you're boring if you don't drink..and obviously they don't really want to be my friend...Which is just dandy because I don't need people like that in my life....but my life is sad...I spend my days studying..looking at my phone screen...studying..looking at my phone screen...sleep..repeat...I've lost weight and I have no appetite and I just want to sleep...im bored most days...the only days I feel happy is when I'm riding..but that only happens once a weekend..why is no one noticing this...especially my parents...I cry myself to sleep not nights and I'm counting the days un till...I don't even know...Un till I graduate...I guess I came here so that someone can tell me that I'm going to be okay....that everyone goes through this? I hate feeling this way..I feel so self absorbed because all I've started doing is feel sorry for myself which I know I shouldn't but it's hard when you're life I so uninteresting...being alone makes me feel small and weak..and it make me feel like I'll amount to nothing in the world...I have dreams of travelling but that won't happen in another 7 years..Un till I start working and getting money...my course is demanding so I study hard..but when I have free time all I do is watch tv or read...I've tried doing things on my own...but it feels awkward...I seriously need some motivation in my life