Here's how it typically happens. Male and female meets. For 2-3 years, there's a romantic interaction. Sex is plentiful. Male feels the need to lock down this good pusssy situation. Engagement ring happens. Wedding happens around the 2-3 year mark. Sex still plentiful for the first 2-3 years after the wedding. Then, if no kids, boredom sets in. If kids in first 2-3 years, kids take over everything. For the next 2-3 years, less sex, more boredom. Then either an affair, divorce, or just ongoing boredom. Ongoing boredom is where people do swinging/poly/open relationships.
After the exciting phases of the relationship (bf-gf stage and initial 2 years or so of marriage), the relationship stinks. However, 2x a month married sex is better than being a near incel, which a lot of beta males would be without a wife.
Few of my married friends have said anything about their sex lives to me. A non-married guy I know in an 8 year long relationship said a few years ago (2019, pre-pandemic) that boredom had set in and sex frequency had dropped. I don't know why he didn't leave then. My social circle had multiple marriages in 2017 so we're probably coming up on the boredom phase in the 2017 marriages.
The definition of married man is a man playing house. Relationships have a shelf life of goodness in most cases that is no more than 5 years. In a relationship, there are ways to slow down the time it takes for boredom to set in (not living together, not seeing each other nearly daily after 1.5-2 years, etc). Even still, it's difficult to keep the passion fires burning beyond 5 years.
Wow, you were about 18 then and you got an invitation to rail some dude's wife. Impressive! You did the right thing by getting too shiitfaced on alcohol, puking, and not doing the whole thing.
For those who don't know who
@DEEZEDBRAH is talking about, here is Geoffrey Miller, PhD at University of New Mexico and professiorial cuck.