I prefer Megcestiel (cause poly ships are the best ships) but YES. All of them being friends is preferred. Go ahead and give Cas a dick ex but it bugs me how often Meg is given the short end of the stick as far as Cas goes.

Agreed!
Megcestiel is fine because I do love polyships but I also really like it when everyone has friends in fics where there is only a two person couple. And like, Meg isn’t that bad. She started out that way but she had a successful redemption in my mind. Dean and Sam trusted her they just snarked like crazy at each other.
(SHE DROVE THE CAR OKAY. YOU DON’T GIVE BABY TO SOMEONE YOU DON’T LIKE.)
I love Meg. Cas can have other dick exes but not Meg.