TK Reigns

Please keep me anonymous. I moved in with my boyfriend 3 years ago. He lost his job in September last year. I have been a breadwinner since then. Our flat is small, just a 1-bedroom flat. He invited his sister who is job hunting to come stay with us. I know it's his flat but I'm the one paying. I do not earn enough to support an extra mouth. I told him to tell her to leave but he's refusing. He says he doesn't want to disappoint his mom. I found a room in the township and I'm planning to move in there from 01 June. I didn't tell him anything. He thinks I'll be paying rent on the first. I'm just tired of not being listened to. They will see how they survive the whole month. Am I being selfish?