Learn English – What to call someone who always sincerely shows on the outside how and what he feels on the inside

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So, this person is very open, honest and brave to display his vulnerabilities and feelings (because that's what feels natural for him, and as a good thing, to do) whether he's out in public, with strangers, or not. He's being particularly open about his feelings and vulnerabilities, even when it may not be asked for or necessary to do so. There is nothing fake or deceiving about this person. You're always directly connected to whom this person really is.

Best Answer

A genuine person fits also.

free from pretense, affectation, or hypocrisy; sincere: a genuine person.

It can also be applied to personal attributes like feelings, sympathy etc.