Love between a man and woman has conflict
And hormones! That's that feeling of "falling" or "being" in love. Not love at all, but the chemistry for procreation.
Real love is a verb. It requires action, and therefore not a passive thing. It is action without consideration for one's self, or self gain. It is acceptance and tolerance. The declaration of love requires followup. Walking the talk.
There is an incredible book out there on what love is called The Greatest Thing in the World by Henry Drummond written in the 1880s based on 1Cor section on Love.
I love my spousal unit Kevan. I trust him, I value him, I respect him. I accept and admire the things in him that often drive me nuts (he's an anal organizer and I'm a slob). I have learned to do things that reinforce my respect for him, like keep the kitchen cleaner and process the cat food cans and dishes immediately in the morning (when I'm not mentally functional) instead of leaving them in the sink all day.
Yes, we occasionally argue. It's human. We also walk away, and it doesn't usually get in the way of how we generally act toward each other. We also see a relationship counselor 2-3x per year. It's necessary for our sanity as a couple, and a good time to get mediation on a problem that has surfaced and we're unable to resolve by ourselves.
Unconditional love is extremely difficult to achieve. It is up there with perfektion. You can glimpse it. Sometimes achieve it for a fleeting moment. However, it cannot be sustained. The best we can do is to continue to apply ourselves to it with small, unconditional tasks: giving a dollar (maybe our last one) to the bum on the street because they need it more than we do, even if they are just gonna buy Wild Turkey. Picking up garbage on the sidewalk. Plugging someones parking meter that has run out (illegal but loving). Smiling when you feel like crap.
Hugs and love and peace
Brenda