How can both partners be happy in a marriage w/o sex if one wants it and one doesn't care? That's not a hypothetical question, I really want to know. It's a problem right now.

*Here's a question: How does a dude who wants to have sex (and has ADHD, Anxiety, Dep., etc.) approach his wife, who generally seems disinterested in sex (maybe b/c her husband's issues make him act like an a-hole sometimes), to get the desired result? This is in a family with elementary school aged kids so we have almost no time alone.