Letter Apologizing For Flirting

To

[Name],

My thoughtless words and behavior have been weighing heavy in my mind since our last encounter on [Date] at [Location].

I understand that my actions on that night made you uncomfortable, and I take full responsibility of that. I treasure our existing relationship and it was not my ulterior intention to start something of romantic nature by flirting with you.

It was a lapse of judgment on my part.

I assure you that the flirting was innocent in nature. I hope we can put this incident in the past and continue our usual relationship going forward.

Thanking You,

[Name].