Cant say for every one, but for me love seem very different than for the NT around me, what i call love has roots in loyalty and respect, as with NT's loyalty seems to have nothing to do with it, and respect even less, hopefully i have learned from the wrong crowd, but it seems to me that in the NT world, love means sex, and that is the end of it, it is extremely shallow, as for me it means two people with a relation that is so strong, that they become two pieces that are the same, and even the idea of being with someone else is impossible, when im with a girl (im a guy) she is the only one on earth, she becomes the most beautiful, as i am blind to phisical beauty, as i learn to know the person, i discover more and more nice things, and that is what i see, not the external shell. i kind "lock in", as long as i am in a relation with that person, i cant be with anyone else, i have to unlock from her, and only then i can be with someone else, and i mean nothing is functionnal if i try, i can only be intimate with that person.
i hope i express what i think properly, asperger and french makes it pretty hard to express stuff like that ... lol
i also have to add that i have pretty weak understanding of relations, even for an aspie i guess im weak on that, i see friendship as just another way of hurting people, get in close and personnal then strike where it hurts, i know its a pretty bad way to see that, but i had real bad experiences, and im seeing all kind of specialists right now to help me fix that.
i hope this helps