ok this might be hard but I was flicking through channels and can across a movie scene and it was actually the last scene. So it was the blonde haired guy chained in this dunk tank and it looked like he was in a circus (after hours) and there was these conjoined twins and this crazed sad looking blonde woman and the guy in the was trying to convince her that he loved her so I’m guessing that he betrayed her in some way but she didn’t believe him and this other guy was telling him he had to die and they filled the tank and drowned him
sounds like the finale episode of “American Horror Story Freak Show: Curtain Call”.
https://en.wikipedia.org/wiki/Curtain_Call_%28American_Horror_Story%29