Shit! Faithful husband fucked! How could I!?

My friend called me to pick her husband up, she has to work longer and can't do it. Of course I can do this! That's what a best friend is for! However, that reminded me of how horny he had fucked me earlier ... Well, the two had actually cleared that up after their marriage crisis and promised to be true. Fortunately, it never came out that I was the one ... The very thought of it made me horny again. So I put on some fancy clothes and I went to him ... I have a bit of a guilty conscience now that I fucked him at his construction site, especially when he called his wife ... Shit !!