Lomed Mkol Adam-
It causes you to feel appreciated and loved.
Which would certainly not make it selfless.
When we act upon our instinct to love and we give/care to/for our friend/spouse, we are in essence creating a deeper dimension to our primary instinct feelings of love.
So to get very technical, the feeling is not selfless, only the acting is, as I said.
Giving to a person whom you love is also an emotion.
How is giving an emotion? One might commit to give because of the value he holds for his emotions, but giving is not an emotion, and emotions are not selfless.
So even the most selfless person is actually driven by his inner desire for love.
No argument here.