1) Someone who has your back when you need it, but knows when to get the hell out of your way when he has to. Useful for fixing things, keeping you warm, and that fuzzy soft happy feeling that he usually creates.
2)Also, apparently something most of the previous definition submitters haven't the personality to attract.
1)"I love my husband, he managed to fix the toilet after it exploded and started spitting zombies out every fifteen minutes" - Random Female Victim of Zombie Attacks
2)"...In short he is about useless." - Well, I suppose you'd think that, being completely unable to attract a decent guy.