How far is too far?

Lately, I’ve been having  a “new love” in my life. We’re not together yet..we’re just talking. Everything was going good in the beginning..but now it’s like i’m just not even appreciated anymore. We used to talk every single day, and were just so happy with eachother. I saw in his phone the other week that our friends name was “lizzy sexy” in his phone. that started a fight right there..but ever since..it’s been different. This past weekend, he went to a party where it was just all girls. That’s one thing that got me ticked. THEN, we were supposed to spend time together the day after..but of course, he was too hungover and didn’t call me at all. Finally, yesterday I flipped and said that I never see him, and him blowing me off is getting real old real fast. So, he said we’ll go out today…..he never called. Not once at all. It’s hard trying to move forward to get into a relationship when you’re the only person thats willing to try. After all, you can’t be in a relationship with yourself. So what do you think…hang on, or let go?