Why hasn't my ex deleted/blocked me off social media?

About almost 2 months ago my boyfriend broke up with me , since then we've had like ups and downs but since 2 weeks ago we don't talk to each other anymore. The thing is he still has me on whatsapp, he still has me on snapchat although he almost never views my story and neither do I. He still is Facebook friends with me and he still follows me on Instagram although he unfollowed my friends and he unfollow his other ex. Isn't that weird? Should he be so upset and block me off from everything so he forgets me? Why did he unfollow his other ex suddenly?
Why hasn't my ex deleted/blocked me off social media?
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