When my friend and I were playing Valheim, he would stay at the base to build stuff while I went out to collect stuff. I don't think that he appreciated me referring to him as the 'boywife' the entire time.
One thing I've found interesting as a wrestling fan is how often male pro wrestlers will refer to another wrestler (usually another guy) that they're especially close to as their "road wife". Thinking specifically of CM Punk and Kofi Kingston here.