Rodrick has been bothering you about a water draught in his house since you stayed in his, as his loving partner. You stayed with him since his parents went on vacation just so they could stay away from him, possibly?

He told you he received a notification about a water draught. That meant you both have to shower together to "save water." As he had implied.

You told him that you didn't get a notification about this water draught and asked him to show the notification about the water draught her was stating.

But suddenly, he looked at you. Glaring at you deadly, then throwing his phone across the wall, the screen broke, and then he glanced back at you again.

"I have no phone! It's dead! How will I show you the notification if I don't have a phone! Just shower with me so we could save water for many.. Many animals! The living! The humans and animals!"