Oh, that's interesting - I never took the term OTP to refer to exclusivity. Maybe because my first OTP was Kirk/Spock and I never did see Kirk as monogamous, LOL.

My own Jack OTP is Doctor/Jack, actually, but no matter how intensely I ship them I don't see that as a monogamous relationship at all. It makes no sense to me that way, for either character - and I don't feel the fact that they're not exclusive with each other takes anything away from specialness of the "one true" ship. Maybe the other way round, actually - there may be other relationships, other loves in their lives, but this one is something special. *g*