I know what it’s like to be in a long-term relationship that is effectively a marriage already, and while a good partner (looking past the gender issue with the

I know what it’s like to be in a long-term relationship that is effectively a marriage already, and while a good partner (looking past the gender issue with the language now) does take the effort to provide emotional support and even sex, I don’t think that it’s mature nor healthy to call such choices “responsibilities”, because responsibilities are things that people have the obligation to do regardless of their emotional and mental well-being.