Bishop Riley has a problem with crowds, even when he's a known baterist, he hasn't fully mastered the art of performing in large crowds, this leads to really big addictions that he covers up by saying it's a way of relaxing.
Penny doesn't have time to lose with a bad boy, she's more interested in her game, hockey, being the only girl in a team can be hard, but she knows how to handle all of that. But one thing she's missing is a way to handle her feelings and when a foreign mysterious man reaches her cabins, she starts to lose her cool and even oper her heart a little bit.
What I like:

• Bishop: Most of drug addicts won't accept they have a problem until it's either too late or something big happened in their life, in this case they manage to keep that real part of him in the story, they don't make it fall out of an addiction easily. 
• Penny: It's weird to find strong female characters that don't feel intimidated by the male role, she knows what she wants, she's not afraid of talking, she lacks a bit of confidence towards love interests, but other than that she always manages to keep her head high without being cocky. 
• The way they don't change as soon as they get involve with each other, we often see one of the characters changing to fit the mold to be liked, in this case no one changed for the other person, they overcame situations and stayed true to themselves.