Cheated On Wife With Young Co Worker

I work with this young beautiful 20yr girl. We work at the same assembly table together just the two of us at the table so it’s only each other to speak to. We’ve had conversations about just about everything my wife, her fiancé, weather, cars, sports, buying a home you name it. Recently the conversations have become more personal. She asked if she could ask a personal question. She wanted to know if married people really had less sex as she just recently got engaged and I guess she was curious about married life. I told her yes I’m my case we had less. She then asked what about other stuff. I told her if she meant blowjobs my wife hadn’t given me one in quite a while. I changed the subject and we continued working after a little while she just out of the blue said I’ll give you one, I said what, she said a blowjob. I laughed it off.

At the end of our shift I was sitting in my truck getting ready to leave when she knocked on my window and asked you want one or not. She got in and we waited until all the other cars had left and drove to the back of the lot and she proceeded to give me the best blowjob of my life. I came she swallowed and I dropped her off at her car and she just said we’ll see you tomorrow and left

We’ve worked together since then and nothing has changed, neither of us has mentioned it or acts like it even happened.

I however don’t know how to feel I feel bad I cheated but glad I got a blowjob after so long without. Also I feel a little weird about her being only 20 like I took advantage because of the age gap even tho it was her idea.