Relatively long time lurker, first time poster here

So at this point in my life, my sex addiction and BPD really love each other and I have a tendency to hook up with random guys. Although apparently I'm a terrible judge of character because 3 dudes in the last 4 months or so have ghosted me. Just, hook up once or twice, and suddenly they're no longer in my matches on Tinder and they are either ignoring my snapchats or have unfriended me. At this point I'm wondering wtf I'm doing wrong (because obviously it has to be me not just them being shitty /s) but still. Is there something I can do? Or some way to make it hurt less and become less attached? 

I'm just sick of feeling used and stepped on, but I feel like I need sex in order to feel validated. I don't know how to deal.