The Flash, Season 5

Cisco:
[emotional regarding Gypsy] We just had something so special. Shouldn't it have worked? 'Course, now it's not so special anymore, and now she's just rattling around... inside my head.

Caitlin:
I'm sorry this is so hard for you. But it's okay that you're still thinking about her.

Cisco:
I don't think you understand, Caitlin. I mean, she's literally... inside my head. I can't vibe. Everything I vibe connects to her. I put some music on, I hear her voice singing along. I'm painting my figurines, I see her face on Captain Kirk's body. Shhhh... do you smell that? Of course you don't. 'Cause that's her perfume, [laughing nervously] and I'm the only one smelling it.

Caitlin:
Of course. Your powers linked you guys over pan-dimensional space-time, so it makes complete sense that your vibe echoes would be–

Cisco:
–connecting us to each other, yes, I know. Thank you for the diagnosis.

Caitlin:
I'm sorry. You don't need a doctor, you need a friend.