I take your meaning, but it's just a word for unconditional love for another human being. One that you can't imagine your life without.
In my case, my WH is farfrom perfect. He's difficult, egotistical, alcoholic, and verbally abusive. He is also warm, loving, nurturing and wonderful. OMG, I'm making myself sick.
Point being, while I understand the need to distance myself from this person, to heal myself; I still cannot imagine my life without this one person. I feel that we were - squint your eyes Jack - soul mates