Sex is not a biological need because you do not die without it, plain and simple. There are countless people who lived long, fulfilling lives without having sex even once. It's a strong biological urge, yes, but not a need.
You are confusing love and sex. Plenty of people have sex without loving their partner, and plenty of people love without wanting to have sex. And let's face it - you'd never like a perfectly loving romantic relationship without sex, because you're not actually interested in the time, effort and care it takes to have a fulfilling romantic relationship. You want a fleshlight who has to cook for you, that's it.
you would be married off at an early age or at least be courting a foid so that you would not go ER on your tribe or community
You think men going fucking rabid and killing their family and neighbours because they didn't provide them with a sex slave is normal? That it's how this has always worked? I'd bet that if you started doing shit like this in medieval times, they'd just arrange for a hunting accident to happen to you.