Don't mountain bike when you start dating someone!!! I was mountain biking this weekend and was smoking the trail as usual. All of a sudden, for probably 2-3 seconds, I thought about the girl I went out with the night before. That's all it took. I ran right into a tree. The second time I thought about her on the same ride, I fell in a spot that is so easy and I have never fallen there before. That's where I hit a rock bed and am now black and blue down my left side.
Again, don't mountain bike when you start dating someone!!!