Dear John,

I am sorry I can not keep up this pretense any longer and need to come clean and admit to you that I have been seeing someone else on the side.

It started off as a casual affair, but the more time we spent together getting to know one another, the more I was convinced that it would be a long lasting stable relationship. The experiences we have had thus far were mutually beneficial and free of the awful fighting you and I used to have trying to see eye to eye and always at my expense.

Regards

Vyoila