This is a bit of a tangent, but: does it bother you that you've never been in love? I suspect if it's a premise that is popping up in your dreams, and conscious-you has recognised that contrast between dreams and reality, it must.
I think it's actually fairly common. You've probably had partners you cared very deeply for, but not at an intensity you would consider "in love," yeah? I don't think that's actually a problem and more relationships / marriages are like that than we think. Just two people that care about each other, enjoy each other's company, get intimate periodically, and are trying to survive this flaming roller coaster of a life we're all experiencing. That's why "partner" is an apt term, we're all just trying to survive (and thrive), not live out a Harlequin romance novel.
If it works for both of you I wouldn't fret too much - but I know brains don't really work that way.