When you hug/hold someone you are attracted to, does it feel different to you, and can they tell?

Its all in the question really. I think you can tell the difference in hugs from people who are just being friendly and those who have more feelings for you but am not sure. Would close other gender friends feel like a partner or crush would? More to the point, can someone tell from the way you hug them that you are interested?
When you hug/hold someone you are attracted to, does it feel different to you, and can they tell?
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