Everyone is different of course, for myself, I've never felt any jealousy when my wife has played around. Our first experience happened almost by chance, she was pissed off with me, in a bar, and somewhat ....... That combo of three things led to her engaging with a guy who had his tongue in her mouth and hand up her skirt in no time. When I caught them at it, I wasn't angry or jealous at all, but just thought it was the horniest thing I've ever seen. Which did surprise me to be honest. But I've never felt jealousy since. As for her feeling ashamed, I think she did feel a little awkward about the first time or two, but that soon stopped and she just threw herself into the lifestyle and we've never looked back.