I always took issue with the "Three's a crowd" mentality. especially with trying to use it as a catchall for relationships the speaker clearly isn't involved in.

You see, the only thing that gets crowded here is my bed, and there isn't a place I'd rather sleep than mushed up between my beloveds.

Original here by the delightful  sterks
Katrina belongs to the lovely  everfreedragoness
Val of course belongs to  val-thor
and Thyrell belongs to  thyrell