Why can't I get over this guy??

Dumped my abusive husband of 15 years, 9 months ago. I'm 40, asked out by 23 year old. First date since marriage ended. Went great!! Then all of a sudden he doesn't want to see me and his reasons are clearly all lies and he lied about a lot of things that attracted me to him. On the first date though, I felt the strongest connection to him that I've ever felt towards any guy. I want that feeling back so bad that I can't seem to let him go. I keep calling him and asking for a second chance. I'm totalling losing my dignity and I know it, but I can't stop. Why am I doing this? I also have a date set up with a guy my own age for this Saturday, so it's not a desperation thing. What is wrong with me??