I'm a guy and bought a woman's thong underwear for the first time
What will you be doing with this underwear, can you give it to a girlfriend?
No, I bought it because it is exciting to wear women's underwear
You are secure in your sexuality and wearing women's underwear should never impact that. I admire you for your honesty.
You don't know what women underwear looks like or how it feels like.
You have a very different approach but to each their own, I won't judge you. Do whatever feels right within moral limits.