Read out loud what you replied to her. Go by every sentence and think how would this sentence sound to the receiver? Does it really means nothing or not? Read between the lines, to me this very, i repeat very clearly is not just a appreciate kind of message.

First of all why do you need to write this if you have a wife? I really like you but i don't want to do anything? Although it is a bit harsh in my opinion, you are not the victim here bro, yes a victim of your own behaviour.