I don’t change based on whether or not I am in an ongoing relationship. A good question actually, as it separates the guys that are only doing it to try and get women from those that are doing it for them selves.
If I am going to work on the car or build a retaining wall my first priority is wearing clothing I won’t miss if they get trashed. So from a co-coordinating clothing point of view my standards are mutable. My personal hygiene standards are not.
Other metrosexual issues:
Do you guys have a French press, cappuccino maker, and coffee grinder on hand even if you don’t drink coffee? How about a gas stove rather than electric?
Running a Massive Co-Front.