I had the same issue writing a canonically (and grumpily) touch-averse character. With me I think it's partly because if I do enjoy a hug it's a sign I'm feeling really comfortable with that person (though the reverse is not always true) so "and then they hugged" is an easy way to say "and then they were really comfortable with each other" (of course it doesn't have the same meaning to most readers) But also there's just all that weight of every other story about characters who like being hugged, it's much harder to come up with your own script.
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I had the same issue writing a canonically (and grumpily) touch-averse character. With me I think it's partly because if I do enjoy a hug it's a sign I'm feeling really comfortable with that person (though the reverse is not always true) so "and then they hugged" is an easy way to say "and then they were really comfortable with each other" (of course it doesn't have the same meaning to most readers) But also there's just all that weight of every other story about characters who like being hugged, it's much harder to come up with your own script.