A fork of Rural Dictionary
The ninth circle of friend-zoned, your friend is so not into you and yet has so much respect for you that they want their kids to marry yours. I doubt that there is any way out of this zone.
Person 1: my crush just told me that when she has kids she wants them to marry mine, what does that even mean??
Person 2: bro you've totally been Co-Parent-In-Law Zoned, you might as well just move on