Cheated on wife during oral

I have a kink for sexting I don't like to tell my wife about. I find it incredibly hot to sext random strangers, for some reason it turns me on a lot. It's tough not to fuck my wife hard afterwards but this time was different. My wife has an oral fixation so whenever she catches me watching porn so loves to wrap her lips around my cock and help me finish in her mouth. Yesterday I was sexting with someone when she came in and I was masturbating. She immediately took me in her mouth. Instead of focusing on her I continued sexting the girl until I exploded in my wife's mouth. I kinda feel guilty but it was extremely hot.