Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Tear Jerker: Naruto The Movie Road To Ninja
Sakura essentially telling Naruto that she wished Sasuke was around instead of him. It hadn't been a good day for Naruto up until then, as he had started to feel the full weight of not having his parents around. Then Sakura dragged him away just to complain about her's (which you could tell was starting to actually make him angry) and then she hit him with that. Keep in mind that Naruto has pretty much gone through hell just to get Sasuke back for her and himself so that comment was extremely harsh. Had Tobi not shown up immediately after to kickstart the actual plot of the movie and take their minds immediately off of that, the two's friendship likely would've been irreparably damaged.