A guy/gal who calls you beautiful/handsome instead of hot
Who calls you back when you hang up on him/her
Who will stay awake just to watch you sleep
The one who kisses your forehead
Who holds your hands in front of his/her friends
The one who reminds you how much he/she cares about you or how he/she is lucky to have found you
Who turns to his/her friends and say that is him or that is her
Above all, when there is understanding between you and your partner