• You have offended me by lying to me over it. Why?

• By lying to me and cheating on me, you have offended me.

• I know someone that even I am offended that you would cheat on me. I am offended.

I am often required to remove the use of commas. They cause the reader to pause, and for some readers such as me this interrupts their comprehension.

Eliminating the “you” will also eliminate the ownership of the actions “lie” and “cheated”. Ownership is very important for the reader, as it gives a solid sense of who does what, what is, and who it is.