I love watching my wife getting fucked doggy style with a strap-on by an SP while I am just sitting there in a distance, or even sometimes getting out and watching through the window. We have a bit of an age difference, I am 50 she is 29 and bisexual so the short list of SPs we call for some fun is mostly excited to spend time with her youthfulness. We don't do that too often because of professional obligations we have no time, but once a month or so we find the time to call one of our favorite SPs for an entire evening of fun. One SP in particular we often call tells us her stories with other women she "services", if that is an appropriate word for that. What I found intriguing is that based on what she says, her female clients are more interested in domination (more receiving than giving), instead of traditional female lesbian sex. Once she showed us pictures of her dressed in a business suit, I could hardly recognize her. Looked like a guy. Another SP we sometimes call, but she isn't too available lately, tells us that she often brings along her male partner for 4-somes, if the male member of the couple-client is interested in receiving anal. Sexy stories we hear from girls. Me and my significant other often listen to all that and get extremely turned on.