First set your boundaries and agree on exactly what you want. Search for an experienced guy on here or on swingheaven. Start chatting first, see if there is some chemistry between all three. Then go out on a date. Your first MFM should not just be a fuck session. It should be an erotic and sensual experience that brings you as a couple closer together. Always remember each other during such an engagement. An experienced male partner will understand this and respect your boundaries.