From ye olde internette:
I've suspected this for a very long time, and it's interesting to have some confirmation.
The big tip off here is that Tranniv's friendships are rarely like, "Yeah, we hang out and watch the Leafs game."
It's always like I love you, you're a monster, I need you, I hate you, please have mercy on me, I'm too busy for you, you're a manipulator, I can't live without you.
Check out the chats with Sara and they follow maybe not this exact pattern but there's a lot of that really intense swinginess there.