I think the only way a human relationship can work out with us genuine zoos is with other genuine zoos. It sounds like you ended up with fetishists and wankers, not actual zoos. I think that will always lead to human jealousy and frustration.
I'm a male zoo, bi with canines and straight with humans, and the only real relationship I've had with a human turned sour after she began exhibiting jealousy over how I was with canines. I thought, and hoped, that would be something highly attractive to her. That's how it is with me, the more a girl is truly in love with her canine partner and caring for all nonhuman animals, the more attracted I am to her. I'm typically attacted to the canines no matter what lol ?. Anyway as time wore on, things got worse between us and eventually she admitted that she wasn't really zoo, she wasn't 100% accepting of it and was hoping I would eventually change. Turns out it was something she was personally struggling with and one day, at some point in middle of our relationship, she decided she wasn't zoo after all and stayed with me because she still loved me and hoped I would change, and love her more than canine, hoping I would eventually feel the same way she did. Which explained a whole lot.
Whether it's an experience like mine or yours, I think it tells the same story. Nobody likes feeling like a third wheel in a relationship, and the only way a poly-zoo pack can work out is if all members of the pack are equally attracted to one another, or if each human partner has their own nonhuman partner that's compatable with the pack. I think this kind of relationship has potential to be really wonderful for all pack members
in so many ways if it's more centered around our nonhuman partners and equality rather than treating the nonhuman partnership as something to accept and look past or as a kink like most people do in the "zoo community", especially the men. Humans like this don't want to be zooromantically or zoosexually involved with the nonhuman partner, they just want to be our primary partner and hope we'll shove the whole zoo thing to the side for them or change, or at least make it secondary to them. These types of people aren't genuine, their motives are not right and I think the best option for real zoos to ensure our happiness and the happiness of our nonhuman mates is to be zoo exclusive or find real zoos like ourselves who share our values.