I won't.

I don't mind what you have done in the past, but I don't want you to be unfaithful in the future." "What a question! Of course I won't.

But if you don't believe me--oh, dear--" Stephanie sighed painfully, and Cowperwood's face clouded with angry though well-concealed suspicion and jealousy.
"Well, I'll tell you, Stephanie, I believe you now.

I'm going to take your word.

But if you do deceive me, and I should find it out, I will quit you the same day.