Me and the mrs have been together since we were students back in the early 80s...

We lead entirely separate lives apart from evening meals, an hour or two on the sofa watching TV and dozing off;
.. and bed: I'm nocturnal, so usually join her for a half hour of more of 'cuddles' before she gets up for work...
[she needs that boost of affection to get her started up in the mornings..]

It seems to work ok for us..
basic human drives & appetites cement us together, and for some odd reason have kept us mostly monogamous for over 30 years
as we now are both getting more lethargic and fatter...???

Being adventurous, thrill seeking and adulterous is stressful and too much like hard work...

She is gregarious and enjoys going out..
I'm a miserable hermit who can't stand the discomforts and irritations of socializing......

Something to be said for a boring lifestyle of mutually beneficial compromise, stability, certainty and affectionate dependability...

We do share the same basic core tastes & values in 1970s music and pop culture,
even if my more idiosyncratic personal preferences are too esoteric out on the fringes, and hers veer more towards safe comfy MOR...

Her current favourite radio station is "Smooth Radio"
She also loves karaoke..........

I prefer randomly searching trash culture movie & music links on the internet
and stumbling across unknown treasures like 1960s Turkish psychedelia and Indonesian rock n roll..

I look forward to her annual holiday abroad with 'the girls [late 50s / 60s]
so I can have the house to myself for a week....