Seeking a lady to join us in regular FFM threesomes

Well established couple in a 7 1/2 year relationship (she bisexual, early 40's,he straight, early 50's, both Caucasian) seek a bi-curious or bisexual Caucasian lady with a high sex drive, preferably aged between 28 and 44, to join them for discreet, regular FFM threesome fun, with a view to a long term FWB-type relationship.

The focus is on the two women and their girl-on-girl interaction. He will only get involved if invited to do so by both women and will gladly sit out if he is not invited to participate. But he does like to watch the action quietly from the sidelines!

They can host any time at their place on the Atlantic seaboard.