A defense mechanism?

Dear anonymous,

Lately every time I have a conversation with Ethan, I tend to be really sarcastic. Especially if he tries to be nice.

Example: tonight told me that he misses living in Roy Ivor, the building we used to live in. In reference to us being able to hang out. In response, I said that the only thing I missed was having a window (I now live in a basement).

Think this is a defense mechanism? Seems like it to me.

Love,
Michelle