Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Tear Jerker: Dracula
When Lucy finally admits her feelings for Mina and kisses her, Mina's confusion and subsequent rejection of Lucy wrenches tears from the both of them, ruining each other's closest friendship and Lucy loses the woman she loves. When Lucy later realizes she'd been lied to by Lady Jayne who helped encourage her to come out to Mina, its even worse.