When all else fails, go OT3. I'm fine with polygamy as long as its consensual and no abuse is involved. I noticed few fans seem to like the idea. Very few fans like their "rival" pairings.
I don't support it either honestly, Freddie can go have Melanie or Spencer for all I care, but it's a nice pairing idea.
I like it being Carly centered, so it'd be Sam/Carly/Freddie to me.
What's your ideas on the pairing?