<human>: Could you distill the essence of the text into 1-3 sentences?

Was a bit nervous posting here but I just wanted some more outside opinion on this problem that I have.

About four weeks ago, roughly before my senior year of college started, my SO of four and a half years broke up with me out of the blue. We were in an LDR and we were planning on getting married after I finished up my summer semester and I would move to his state to be with him. This came as a complete shock due to not seeing any signs as to him acting strange about it prior, but never the less, it happened. 

This was my first relationship and I invested a LOT of my time into it (which from my understanding, tends to happen in first loves). My ex and I are both gamers so throughout our LDR we'd skype and game all the time on our computers. Looking back on the past years in that relationship, I realized I invested way too much time by not meeting new friends and missing out on fun opportunities. I've never had a lot of friends to begin with, and many of my current friends I met were my ex's (I met and hung out with these people when I visited him, as well as chat/game online, etc). Now that we're broken up, these friends don't talk to me much at all give or take one, maybe two. All in all I suddenly feel very lonely, and especially when it comes to me about to graduate next semester, I feel like I'm starting my life over alone. I have a bad anxiety disorder which makes it hard for me to go and meet new people/  My college as well is a small liberal arts school that is very "clique-ish" which makes it hard to break the ice and I don't drink/party which many people do on campus to socialize. I feel like I'm at a loss and might just end up alone forever, but I don't know if that's just from post-break-up depression. I keep telling myself I'll meet more people after I graduate but then I keep having second thoughts. Has anyone else gone through this and can offer any insight?
<bot>: BF broke up with me, lost friends because of it because I invested too much time, about to graduate knowing no one at school and essentially starting over alone. Help!