Obsessed With A Coworker

I am obsessed with a coworker of mine who would probably only give me the time of day if I pay her. I believe she is beyond sexy for being a chubby girl. She is single, 22, a mom, beautiful, got a bit extra weight to her, cute little tits, nice big round ass, dresses in clothes she shouldn't for her body type. But I find that to be the sexiest part about her. She tries to look sexy and usually does to me. But she's always single, never had guys or girls interested in her. She will often talk about going to clubs and ending up coming home alone to fuck herself because no one will bring her home. The amount of times she brings this up almost makes me think rejection is her turn on. Is that a fetish? Like purposely dressing in a way that attracts attention because she knows most people would not find it sexy? Or bringing up that she is a young single mom and getting lazy thus her chubby body. She is at this stage where she is between being hot and pathetic. I love reading about what she post on her Facebook and Instagram about being rejected so much and seeing the pictures of the outfits she wears. I myself am not the prettiest woman and like her I was a single mom at a young age(I am 36 now). Except I have been naturally skinny(outside a belly from too much beer) I have not had sex in many years and have pretty much given up and accepted that masturbating is my sex now. I love that she is pretty much already at the same stage as me. Except she tries and fails so much. But she keeps trying. Again to the point I think maybe bring turned down, denied and laughed at maybe what gets her wet. I think she goes to these clubs to fuel her masturbation habit and uses the memories of the men and women rejecting her to finger herself to them.