Gender is certainly a controversial topic right now, but sometimes I talk about my gender and identity and I confuse people, so I thought I'd make a quick post to explain.
TL;DR: I am male, but not a man. He/They are both fine.
But what do I mean by that? Well, I'm male, biologically, and perfectly happy with that. I say I'm not a man because I reject the male gender role, which the word "man" implicitly applies to me in a way the word "male" doesn't so strongly.
Calling me a "man" implies conventional masculinity, "manhood", being "manly" etc, all of which are concepts I reject and don't want applied to me. Some people think this makes me transgender (I'm not) or non-binary (I'm not) or agender (which is the closest term, if agender is the rejection of gender roles, but still not really). I just think that the concept of what a "man" should be is dumb, and therefore I don't like people saying I am one.