What in the hell is LOVE?

I have been trying to understand the meaning of love for quite a while. The following reflect my current understanding of "LOVE". Please help me refine it. I do not intend to publicize that I spent time on it. If you are the few who would sees this, please keep it to yourself.

© LOVE: For one to LOVE the loved, is to have:
1) the affection and loyalty to the loved, and
2) the selfless desires to provide…
-(a) Joy and Happiness;
-(b) Security;
-(c) Necessary supports for the meaningful endeavors of the loved; and
-(d) Means and knowledge that allow the loved to control his/her own future, which hopefully lead to 2a, 2b, & 2c
-- and
3) actually act upon these desires.

Rationale for 2D: No one person can guarantee that he/she will always be there for the other. Providing 2D would allow part of the love to last, even when the lover is gone -- rather it is because the lover is no longer affectionate to the loved, or the lover become influentially incapable (i.e. dead / damaged / loser).

TRUE LOVE: The mutual respect and enduring love from and between both parties, where both decide to be faithful, regardless of what lies ahead. ©

I recently questioned why people declare to third parties that he/she is in a "committed relationships", as in having boyfriends and girlfriends. Why and when should one make this declaration? Is it like a social courtesy? How is it related to love? Is it related to possessiveness and fear? Help. . . .