My Ex Spouse Ruined Me

I was with my ex wife Shelbi for 4 years, married for a little less than 3 of them. I truly hated everything about her from early on, but caved to pressure from family and friends and stayed with her for far too long. Before we were even married I had a hard time fucking her. She wasn't ugly, I just wasnt at all into her as a person. I'd have to watch porn as a primer and put her face down to bust a nut. Shortly after we got married we came to a mutual understanding that we did not want to fuck each other, or even sleep in the same room.
Initially this led to us having an open relationship. Which quickly turned into swinging and wife swapping. Once this slut was turned loose at a party she'd let every last guy run through her, which honestly worked out for me, as I'd get to fuck many of the wives of the guys fucking her. I vividly recall standing in the kitchen of a little apartment getting a bj from one of the guys wives and then fucking another while Shelbi was in the living room having a train ran her with at least 10 men taking turns on all of her holes. I finally divorced her after she caught a serious std. Not that I had any risk of getting it from her, but it was a solid excuse to finally ditch her.
The bad part about having lived this lifestyle, I now find it very difficult to get off from "normal" sex. Even though it's been a few years since I left her and that life behind, normal sex seems boring still. It has led to me trying to spice things up with my previous girlfriends and current wife. It usually takes exhibitionism or fetishy sex to really get me excited. Luckily my current wife is ok with being seen by or fucking in the presence of others, but for how long she will entertain my fetishes I just don't know. It really is out of her comfort zone though, and she lets me know. This is a woman I am happy to live my life with, and know I need to change, but it's like an addiction. I truly wish I'd never got with my ex wife and experienced the things I did with her, because prior to being with her I thoroughly enjoyed good old fashioned sex.