Dating someone who's a bit too adventurous

So I’m a pretty active person I love skydiving and staying fit but I matched with someone who takes things to a whole new level. On our first date, they were already talking about planning a BASE jump for the second. I’m all for excitement, but that feels like a huge leap, literally and figuratively. How do you balance sharing a passion for adventure with making sure you’re both on the same page? Has anyone else dated someone whose idea of fun felt a little too extreme?