Dear Furryduck from what you're telling me you'll have more fun if he does leave you behind. Then you don't have to worry about pleasing him; you just go at your own pace. And there's absolutely nothing about walking up a hill, I've done it too.
I agree, it sounds like your BF has some serious issues, I don't blame you if you dont' want to ride with him. I wouldn't!

why would he yell at you just because you weren't fast enough? that's just not right.