I was very depressed and I was chatting with my girlfriend. I said I would go take a shower. Let’s talk about it later. Then after I finished washing, I read a funny joke and sent it to her.

Because you are already a couple, I think you should first comfort her before washing up, and let her make sure that you are really just going to wash up, not to pick up girls and cause trouble. Then wash up. You should report it after you are done. Girls are often insecure during relationships. Only after you report it will she feel at ease. But when you sent a joke, your intention was good, but it made her feel like she was working hard to wait for you on the phone screen. What was waiting for her was a joke, as if she had been played with, so a normal girl would be angry. At this time, you should try your best to comfort her and coax her. Don't just call her once and it's over. She can't ignore you. Ignore her until she says she forgives you before you can continue chatting or saying goodbye. I hope you can get her understanding and stay with her 99% of the time