I think someone is confused of whether or not they love me. They tell me they don't know if they do or not, but they say I'm someone dear to them, like a close friend, but they have romantic feelings for me. I've known this person for three years, and found out i loved her after two. Right now, we're fuck buddies, but not out in the open about our affection for each other. I really want to love this person, and be in a relationship, but, now I'm starting to wonder what love really is, and if i feel it for her, since she says she doesn't for me.

Your question is much too general for this subject. From what you've said, she stated that she doesn't have feelings for you, but you may/may not have for her. Being "fuck buddies" was from the start an important decision that has clearly affected your relationship. My point is that if she doesn't want more than sex with you, then that means you shouldn't waste any more of your feelings with her. It's the same thing if you were a girl and she was a boy. I'm telling you from the point of view of a girl right now. I used to have some kind of "friends with benefits" relationship, but it ended very bad. So maybe this is why I'm telling you this, find out for sure whether she likes you more than a guy she sleeps with and then think about your next move.
Take care.

"love is wishing the good of another"
>>2 no, it is not too complex

Well since you don't have your own definition don't use others whole opinion as your own belief but form your own opinion off of the others here and personal experiences.

It's not a waste of time to question love, but in this case I think you should think about if this kind of relathionship is what you want, since love obivously won't be mutual. The real question then is:"Do I want to have sex with a girl with whom I can never made love?".

make*

>>1 check out The Philosophical Love Thread, it's got a bunch of definitions of love from different people, it might be helpful.