Do you think Mad-Eye has ever had a love interest?

No, Probably not. He's way too busy fighting off evil wizards!!! Like Peter Petiegrew

Why not ? He may not have been always like that, I don't see him dying a virgin... Strangely enough, I imagine him being a widower. He's a caring man, very protective and also really funny (well, I enjoy dark, sarcastic humor).

And Brendan Gleeson did a wonderful job. When I think about Alastor Moody, I have his face in mind, honestly that part was really right on in terms of casting.

(I gave him a love interest in one of my fanfics. I enjoyed writing smutty love scenes about him.)

yes. i think he likes professor McGonagall

no