He and she became attached to each other because of painting, but their relationship was deep and shallow.
He and she were childhood sweethearts, but they always passed each other.
He and she spent time and wasted years, but in the end they couldn't get what they wanted.
"I've been waiting for you since the first time I saw your painting."
"I will wait until you are willing to let go of everything that holds you back and come to me."
"I've been waiting for you to love me for ten years."
"I can wait for you to like me."
Time spent waiting for you has been wasted.
I have spent my whole life just to fall in love with you.
That's all.