MatthewLAX wrote a post about the opposite of what some couples have reported on here: a couple intentionally chose two single seats on a 789, and shortly before departure they were involuntarily reseated to a couple/honeymoon pair in the center with no recourse of changing back to their original seats.

https://liveandletsfly.com/turkish-a...t-assignments/

I'm very particular about my seat assignments, so if TK won't respect them then I will not give them a further cent of my business.