Only officially married for about 22 years, but lived together a long time before that. We only really tied the knot in an effort to get my mother to stop nagging us!
Actually just did some cipherin'...before marriage, my wife and I moved in together back in 1980 or 81...so, roughly 40 years!
The first tank I set up in our new place back then was a 50-gallon, which we still owned...and which was still holding water...when we moved away from Ontario in 2011.
I've just proudly shown my wife your post and the callous old trout sniffed, "what he means is, it's GOOD that you're about 4500kms away from him and that he doesn't have to put up with you in person!" Lol.