Wrenna

Season 3
In It Happened 'That Night', just as Hanna leaves the room, after her talk with Mona, she runs into Wren, who is surprised to see her. She immediately asks him not to tell anyone about seeing her. She tells him that she has been visiting because she really needs some answers from Mona, but its starting to prove futile.

Then in "Blood Is The New Black", we see Hanna in Radley, talking to Mona. She tries to tell her about the happenings in school, but Mona is silent as ever. Frustrated, Hanna screams at her and throws a chair across the room. Hearing the noise, Wren rushes inside and immediately takes Hanna away. Hanna is talking to Wren about Mona. Hanna admits that she just did it in the heat of the moment. Wren says he has done worse. His father was also in a mental institution, and he's thrown around more than the chair Hanna tossed in Mona's room. Wren explains to Hanna what she's suffering is ambiguous loss - the person she cares about is still there, but she's lost them anyway.

In "Birds of a Feather", Hanna watched as a Wilden shows Wren a court order saying he was allowed to see Mona. Hanna wanted to visit Mona to ask her a question, one question only. But, Wren didn't allow her to.