Why is my boyfriend being so rude to me all of a sudden?

At the beginning of our relationship he was so sweet, he would always want to see me, and would always text me.

Now he's very dry over text, he lies to me sometimes, and he's rude when he talks. He's invited me to an event with him but ignored me practically the whole time. Honestly he's making me feel like i annoy him. I feel like he cares less about me.

Also whenever I'm busy/can't talk.. he gets mad. One time I was at a concert with my sister, I was updating him whenever I had the chance. But he had the dryest responses ever. I told him I would update him when I got home.. he responded with I don't care.

Why did he change? He barely asks me about how my day was anymore. I'll tell him stuff about it and he'll say "did I ask". I feel like he doesn't care about me as much anymore. We've almost been dating for a year.

Why is my boyfriend being so rude to me all of a sudden?
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