Is it possible for a guy to restrict the communication or go hot and cold if he's actually afraid to fall in love (because you can't be together)?

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I'm trying to understand is the concept of a guy who is afraid to fall in love (because of some objective reasons, not philophobia) is even possible or it's something very rare and rather sugarcoating that girls like to use to explain hot and cold behavior?
Is it possible for a guy to restrict the communication or go hot and cold if he's actually afraid to fall in love (because you can't be together)?
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