Sounds like you've got the right attitude (as far as I can tell). You are right though - as long as there's someone else, just "being friends" likely will not cut it.
Me: 35 W: 31 D10, S7, S2, S11 months M: 11 years Tricked into separation. In Last Resort.
My story: http://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=1800530#Post180053