Andrew Robinson has on many occasions said that he played him as “omnisexual,” and that he definitely had a thing for Bashir. As for his interest in Ziyal: it’s obvious that he was lonely being the only Cardassian on the station and appreciated her company.

I always got the impression that his only motivations for hanging out with her were having another Cardassian to talk to and pissing off Dukat.

And it was a good thing too, given he was the last creepy Cardassian on the station.