Would it be cruel to play a pregnancy prank on my ex?

We've been broke up for about a week now but I thought I was pregnant but it turned out I wasn't I called him the first time and told him that I might be he was very cruel and ask me was I on birth control and he knew I wasn't on birth control and he always would say that he wanted children with me when we were together. But of course he was acting different when we broke up I just want to give a little scare
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+1 y
You guys are absolutely right
Would it be cruel to play a pregnancy prank on my ex?
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