If you feel like a man, like being a man, and enjoy having man parts, you’re probably a man. Your interests are not your gender, and dancing isn’t exclusive to women. Even ballet has male dancers.
Still, a little bit of exploration never hurt anybody. If you are trans, if living as another gender would make you much happier, wouldn’t you want to know sooner rather than later? And if you aren’t trans, you might still learn a thing or two about yourself that you never would have discovered otherwise. Most people go their whole lives without ever questioning their gender or closely examining what it means to them, and I think they’re missing out. There is power in truly knowing yourself.
Do some thinking. Ask more questions. Not just to others, but to yourself as well. What do you like about being a man? Can you imagine not being one? How does that image make you feel? If you could instantly become anything, with no rules or consequences, what would you pick? Don’t shut anything down; there are no wrong answers. Allow yourself the freedom to explore.
It may help you to stop thinking in the binary terms that society imposes on us. Gender isn’t just a question of Male or Female; there are many different kinds of men and many different kinds of women. There is a large area in between where the two overlap and the lines get fuzzy, and even places that aren’t on the same spectrum at all. I myself am a demigirl. My gender identity is mostly female, but also a little bit male and a little bit something else. You don’t need to feel obligated to be what anyone else is.
As for how I found out, I’ve already posted that elsewhere in this thread. It looks like you’ve gotten a lot of answers from others as well. I wish you good luck in wherever this journey takes you.