Tf is this app

A male anime character in a school uniform looks at a female character with a smirk as the text "I hate you..." appears, then the scene cuts to a close-up of the female character's face with the text "...I love you," followed by her collapsing to her knees in distress, then a different female character with red hair kneeling in the dark, and finally a female character in a school uniform sitting on the floor, all with the text "Love you" appearing in sequence.