Is it called Love?

I won a free pair of shoes coupon from the raffle in the event where VP of KEEN gave a speech.
I was so thrilled and exited about the fact that I won something.
However, I didn't use it for myself.
I gave Mr. Hubby the coupon so that he can have a pair of good work boots that are suitable in rain and snow and ordered them in time for this wet and cold season.
I feel like I am a devoted mother who cares about the child before herself...!
This was MINE! but used for my dearest and poor husband...   
I wondered, WHY DO I DO THAT!? 
Is it my nature of being motherly Cancer?  Or is it simply my nature...?? 
Wait, is it called, LOVE...??!!  Gasp.