Who said "I suppose I should be flattered."?

This quote is attributed to Dorian Gray.

I suppose I should be flattered. - Dorian Gray

"I suppose I should be flattered."

Dorian Gray

Character in The Picture of Dorian Gray

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"I wish I could love as you love."

"I don't want to be at the mercy of my emotions."

"What is past is prologue."

"There ought to be some compensation for that."