You want to share each other with Sarah and Jakob only.

“Yeah I wanted to talk to you about this.” You take her hands and look into her eyes. “Babe, I really enjoyed the fun we had with Sarah and Jakob. I never experienced sex this amazing in my life and I’m so happy to see you get properly fucked as well.” Karen gives a saucy smile in reply. You take a breath and continue, ”But I don’t want to introduce anybody else into our relationship. I’ve been thinking about it since they left and we don’t need anybody else to have fun. I’m comfortable with those two because it’s obvious how much they love each other, and how experienced they are about open relationships. With anybody else, I think it might be too much for me to handle. Can you be satisfied with just me and them?”

Karen embraces you gently. “I told you before that I care more about you than anything else. My feelings haven’t changed since then. I’m glad you enjoyed playing with them. This is more than enough for me. I don’t need anyone else.”

“Jakob told me you and Sarah are in love with each other, just a little bit. Was he right?”

Karen remains silent for some time. “Yes,” she answers quietly. “It’s not just her; I feel the same way about Jakob too. We’ve been friends so long and explored each other so much: calling them just friends is not accurate enough.” She looks at you in panic. “But what I feel for them is nothing compared to my love for you.”

“I know, I know,” you tell her soothingly. “I don’t feel threatened. This is one of the reasons why I want us to continue seeing them as both friends and lovers. Besides we’ll only be meeting a few times a year. I don’t think sex with them will unduly affect our relationship.”

Karen kisses you in happiness. “Jakob’s cock was fucking amazing and I loved playing with Sarah,” she says. “I can’t wait till we all fuck together again.” She gives you a poke. “Don’t act like you’re not missing her feet. Your face was stuck to her heel half the time.”

You laugh and tickle her in reply. The two of you spend most of the day airing out your feelings and emotions to each other, ultimately deciding to mostly monogamous, with the exception of Sarah and Jakob.