You were George's girlfriend, and you were Sirius' daughter, George was a simp for you, he love you SO much, he was clingy toward you and no one else, right now George was talking with his twin brother Fred in the Great Hall.

George was eating and talking with Fred, Percy and other person like the Golden Trio, you were around 20 seats away from him, at the opposite side and George missed you already.

So when he saw you at your place he pucked his lips and press a kiss on his tips of fingers and send you the kiss and you "caught" the kiss and place your hand on your heart like you are saying that he send the kiss on your heart.

George was being lovey-dovey with you even if you're far away from him and that his friends and brothers could literally see, he didn't care, he love you, you, you, you, you and you, he missed you right now.