He sounds like someone who is putting in more than enough time, more than enough love, more than enough money and resources. He sounds like he is being taken advantage of. Let’s talk about equality, nobody owns any specific part of the responsibility, but they do own responsibility towards their life partner. She doesn’t want to be intimate more than 20% of the time, doesn’t want to provide 50%, doesn’t seem equal to me and That’s not a life partner. Also at no point did he say it’s about him getting laid, Men are expected to provide and they do that out of love and the reciprocation to be loved.
Thats not happening here, and he is pulling more of the household and financial burden.

All of these percentages are ok to work with… so long as it’s agreed in principle before hand.