single guy for a bicurious encounter

When I was with a former girlfriend we brought in another guy one time. Personally that bi encounter was more gratifying than any hetero encounter I've had. Don't get me wrong, I love hetero encounters. I don't need to post here to find that. It's just that I don't go walking around wearing my (bisexual) heart upon my sleeve, so it's a touchy subject. Now I find myself single and seeking a bi encounter with a loving couple. Tell me your fantasy, I'm open to hearing about it whether it be light kissing and massaging or perhaps more. As far as my body type, I'm on the thin side of the spectrum, 5'10", 150 lbs, if you beleive in all that BMI stuff.