Imagine your OTP meeting in the mental health unit of a hospital.

Why are they there?

Depressed?

Anxiety problems?

Suicidal?

Anger issues?

What are some quirks your character display that may cause them to stay there longer?

Punching/hitting their head off the wall/floor?

Sleep-cutting/cutting in general?

Panic attacks?

Tantrums/random acts of violence/threats?

What sort of relationships have they had that could affect how they got there?

How do they react to the "three foot rule" (where you're not allowed to touch others)?

How do they show affection because of that previous rule?

How good is the character's reputation in the hospital?

How long have they been there and why?