I'm with Janet.
I've been with hubby for 25 yrs but I can't say he's ever made my heart race by just walking into a room. I think I married him because I was comfortable and felt safe and loved by him. After my (abusive) first marriage, that seemed to be enough reason. I care deeply for him, and expect to spend the rest of our lives together, but I know he's not "in love" with me anymore either, which kinda serves me right I suppose.
Just for the record, long ago I was "in love" so I do know the difference.