Should I do it? Shes HOT!?

Im on vacation and I met this girl. we're both 16. she is very attractive. so after a week of normal conversations she sends me this, "I want you to run the bases:)" so we meet up the next day at a park and start making out. My hand was moving around in her lap and hers were in mine. but then something told me to stop. (I've never been past 1st base) I told her I wasnt feeling right (which was a lie) Idk why I stopped. Later in the day she sent me "heyy:) soo...whyd u really stop?? I replied with idk...should I have kept going? she texted back "lol YESS! u hardly touched me there but I was soo close! <33" I foolishly replied with "close to what?" and she says "CUMMING! duh haha:)) " I didnt know how to reply so I didnt. she sent me a message later in the day saying to meet her in the gazebo in the park because she has a suprise for me. Im probably gonna go and we really like each other but at the rate we're going anything could happen. I dont want to lose my v card yet but idk. what should I do? Thanks in advance for any help