<human>: Can you provide a brief rundown of the text in within 3 sentences?

So I [18m] have broken up with my now ex-girlfriend [18f] in December of 2014. To this day I sometimes feel incredibly alone and it happens mostly at night. 

My ex and I  had been dating for one and a half years prior to the breakup. We would see each other almost every day during the relationship, I felt a strong connection with her and she is the person I had done many sexual things for the first time with. She told me in December that she wanted to break up because she didn't want a relationship, though the relationship did feel like it was dying off because it didn't seem like she was interested in me anymore. Fast forward two and a half months from the breakup and I still find myself thinking about her. I immediately get the feeling of loneliness that I have never experienced before. (Keep in mind this is my first relationship to last more that two months) 

I have no idea what to do. I've tried to distract myself for long periods of time but I would eventually think about her again. She's not located in the same city as me anymore but every time i see Facebook photo updates, i get the feeling the breakup didn't phase her and that she's having a better tie than I am. I know I'm still young and inexperienced with the dating game, so please bear with me.

r/relationships, I'd really appreciate all the advice you can offer.
<bot>: Went through a breakup two months ago and now i can't stop thinking of my ex or get rid of the feeling of loneliness.