Well, at least you're up front about this to us and you are to be commended.
As a fully supportive GG, I can tell you that I'm OK with the cross-gender expression, in fact my SO do a lot of things together while she is dressed. But it wouldn't be OK if my SO had any type of fetish ... whether this was the CDing or any one of a number of other fetishes (porn for example, or a foot or sweater fetish, or sado-masochism). This is because as a GG who is into having sex with my SO, I would feel as if something was lacking in our relationship if my SO felt the need to source sexual gratification from the outside, even if "the outside" was my SO and the internet. Or my SO and his fantasies. Kink is fun in any relationship once in a while, but if it was something that turned my SO on a lot whether or not I was there, then I would feel as if I wasn't needed. Honestly, it would be the same to me as if my SO was having sex with another person.
I dare say that most married CDers sense this about their wives and because of this, they don't advertise it when they masturbate while dressed. And if the CDing leads to masturbation each time, then I understand why some CDers wouldn't even WANT to tell their wives. But I would not want to be in a relationship like that. Not at all, even though I support the CDing fully. If this makes sense.
Would you marry a woman because you love her and are into her sexually, or would it be just to have kids. If it's just to have kids, she will feel it and eventually your relationship will fall apart. But, don't discount falling in love one day and actually wanting to have sex with your wife more than alone when you are CDing. This could happen? Or, if you cannot see yourself gaining deep sexual gratification from being with a woman you love, then maybe you should stay single or get into the type of relationship that is arm's length, like a distance relationship or maybe just having sex once in a while with a GG who doesn't want to be in an intimate and connected relationship either.
Whatever you decide to do, I wish you all the best and yes, I do think you should be honest with a potential SO.