Thick and Thin (Definition): If you stay with or support someone through thick and thin, you always stay with or support them, even in difficult situations.     “When I accepted your proposal… It meant that we’d be together for all time, until death do us part.”   

“I never begged for your love… I just wanted just once, for you to look at me, notice me, and say that I was the one.” Can't you see that I've been always here for you?