Was he always as disinterested as he is now? Don't know how long you've been married but I imagine when you married him you could have been in a different place/had different reasons than you remember now?

Have you ever asked your husband this exact question? :-) I often ask my husband questions about me as I like his perspective (usually very loving, kind, and esteem-giving :-) and it often shows me things I haven't even imagine about myself.