Being ignored for no reason and don't know how to act... Quite hurt/annoyed

There's this is guy I've been texting/ met up with a few times. We've been texting most nights for about 2 months... Until the other night, when he suddenly dropped out the conversation for no reason. I've looked back at the conversation on WhatsApp and I don't believe I said anything wrong. I've sent him messages a few messages over the last few days and he's ignoring them, yet his profile pictures and status has been changing. I decided to ring him last night on unknown and said that he isn't replying... He said " isn't it obvious I'm ignoring you! " And then simply hung up. I looked at his twitter and he's been tweeting and everything seems fine. I don't know how to act? I feel pretty hurt and angry. He's the only one I talk to WhatsApp so I'm thinking of just switching my notifications off and not going on for a week. He might wonder where I've gone....

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