Ahhh I just got asked to go have drinks Friday night

Frick sakes, and this guy is my bosses brother and the driver for us workers. I’m just wondering if our night out for drinks is just him wanting to be nice bc he did mention there was going to be his male friend and his long time gf there as well. I’m kinda nervous, never been asked out b4. lol, just when I’m out drinking guys will approach me thinking I’m that easy to take home smh.