I am quite the asshole

You know what makes me more furious than littering or someone in my bathroom stall? Nothing makes me as furious as my cereal bowl being unwashed or gone in the morning.
See, Trina made me a birthday present of this huge cereal bowl that she painted by hand. On the bottom, when I finish slurping my milk, a little message is there for me from Trina: Good Morning My Love---just as we would say to each other when we first woke up. You aren't Trina's Love so why are you using my bowl? The message isn't for you.
I should use the bowl, clean it, and find it clean and waiting for me the next morning. Anything else makes me furious.