Yes I have, multiple times. After the first time it happened though, I always shower between visits. I didn't realize that women would taste another woman on my mouth or smell her on my private area. Since that first incident of getting caught double dipping I have never had an issue.
Firm breasts is the most obvious in public, but in private, a hairy private area
Yes numerous times, I was married before and cheated with a friend's wife. Also with co-workers, and female bosses; in the office and outside of it. Sex is too wonderful not to do sometimes.