准备骗我到什么时候？用英语怎么说

直译太长又有点绕口，所以就意译了。。。

How long have you been cheating on me?
（你已经骗我多长时间了？！）
When will you be prepared to tell me the truth?
（准备什么时候说真话？）

When would you want to come out into the light and stop fooling me?

When ready to lie to me to what?

译为“How long will you lie to me.”