<human>: So I have been hooking up with this guy (call him C) all winter. Initially he said he loved me and if we ever broke up he would only want to be in a relationship with me. 

I fell deeply in love with him. 

Yet he continued to hook up with his ex (call her J) even though I told him how bad it made me feel. It was like my heart got curbed stomped every time. He even excluded me from my friends by bringing her over and I was too emotionally broken to see that. 

I live in a small ski town. Now that the season is over, all of my friends are gone. C is the only one who regularly communicates with me.

Some time has passed and he wanted to go on a ski adventure and made it apparent that he wanted sexual exploits to happen. He also told me that he made it official with J but wanted to keep our adventure discrete from her. 

After mulling it over and thinking about all the times that I saw her with C and how awful I felt, I decided to quit all communication with C. I then contacted J and told her everything. I didn't want her to feel as awful as I did. It was so hard to do becuase I still want attention from C and I don't know if J even believed me. 

I felt like I did the right thing but I feel so lonely and bad for doing it. J never gave a fuck about how I felt and now I certianly lost a man that I felt a close connection with. 

I don't know what to do next.

Can you condense the text into a few key points?
<bot>: Guy fucks with my heart and wants to continue to hook up even though he has a girlfriend. I told his gf everything. Was that the right thing to do and why do I feel so shitty?