I dont know how to answer your specific question, but to me, no matter the personality,
They are strong where you are weak, and lift you through it, not put you down for it.
You compliment each other, not just verbally, but in general.
They stand beside you, not in front of you.
If something is important to you, they at least act like it is important to them.
They encourage you to succeed, help you through it if need be and are happy for you when you do.
And most importantly, you honestly trust them.
That to me are just some examples of unconditional love.
To break it down, if there is more bad than good in a relationship, it needs help or it will fail.
**To add and try to answer your SWH, It really just depends on the day as far as our personalities, from what you describe I am sure we have both, and have had moments of both. I wouldnt say it would be from one extreme to the other, and whos to say the other person doesnt think you are describing them correctly??
I dont know, this is getting complicated! LOL!