It's a feeling. A subjective feeling that's been somewhat distorted by commercial & other interests.
To me, love is the feeling that arises when I contemplate that we are all One. The joy that comes from becoming aware that we are never alone & are always with ourselves. You would know this love as unconditional love, but I think that distinction is only necessary because of our distortion around the word.
The action that arises from the feeling of love brings about joy in others which you also feel. It can also bring pain because joy & pain are 2 sides of the same coin.
To love is to live. ♥️💚🧡