It's a fine line because you expect someone in a relationship to bring up their partner once in a while. I actually make an effort not to, myself, because that part of my life is fairly private - but sometimes even with me it's gonna creep in, the person is around 24/7 and they're part of your life. But people who constantly refer to it creep me out. If they've been married or constantly together less than a couple of years I figure, they're still getting used to the idea, the same way some newlywed ladies love to run around calling themself "Missus so-and-so" till the novelty wears off. But when it's people who've been together a while and even have kids together I don't get it. I have to always bite back the urge to ask them if they're trying to convince themselves they're attached, or convince somebody else? And let's not even get started on the ones who constantly refer to the wife AND the kids. I wonder what they'd talk about if they came home and found everybody split to New Mexico and left the lawyer's number.
By the way, in case this needs to be said, this post does not refer to anyone on my f(r)iends list. I have had a number of people in the past on my list who carried on in this manner but as far as I can tell we have all dropped each other some time ago. Looking back on a couple of the ones I recall, I have to say I feel more comfortable not having to read advertisements for someone's marriage every day. I suppose if I wasn't lengthily married myself, people would say I was jealous and bitter :P I guess I just feel that Commitment Should Be Seen and Not Heard.