I read a couple of posts about your trip, and gotta give you some admiration for it. I am a pretty strong person in many ways, but it takes true core strength to dive into trying something like that.
Hats off to you for doing that.

As far as the girl you like, sounds like you may have a case of the jitters. It's something we have all had to suffer through in our past, when we liked someone and wanted to make the next move in getting to know them better. lol, a plus of getting older is that those jitters stop happening like they did when we were younger.

You could always ask her if she still wanted to go bike riding with you. She has already said that she would like to do that, so perhaps she is also trying to get to know you better.

Congrats on the no SI, let's keep that streak going.