Watch for him noticing 'masculine things' on you.For example, some of your dad's aftershave rubbed off on you when you hugged him.
Your crush may say "is that aftershave on you?" Noticing this can indicate that he thinks the scent comes from another guy (and not your dad!), revealing some vulnerability about losing you out to someone else.
This could also apply to having, carrying or wearing things that he might think belong to another guy.
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How to know if a guy likes/ Doesn't like you.
RomanceJust a little help on how to know if a guy likes you.