<human>: I dated my first serious boyfriend for over a year and a half. I went to university last fall and we even made it through long distance. As soon as I get back he decided that he fell out of love a long time breaks up with me for this much younger (15 or 16 year old) girl from work. They started dating a week after he broke up with me. He tried to keep the ties with me saying he needs a break and maybe after the summer get back together. 

I end up going to the movies with my mom a few days later and something told me to go get a slushie. I walk to the stand and see him and that girl from work kissing. My heart is absolutely shattered, this is how I found out he was seeing someone else after he said maybe we can get back together. Now he wants nothing to do with me after everything we had he's willing to throw it all away for someone else. 

Its been almost 4 months since this happened and overall I am doing a lot better than before but I still can't get him out of my mind. I keep thinking about him and how things used to be and wish I could go back and fix everything. He was my first for a lot of things and I feel so betrayed. I have no idea how long this feeling will last and just want to forget about him. Can someone please help? :(

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: ex left me for someone else, need help on how to get over him and stop thinking about him. This is emotional torture and It feels like it'll last forever