I always LOL at the number of people that say 'they should just fuck' when we are talking about teenagers. Yeah, they have ALL the equipment to have sex, but they might not be ready yet. Or God forbid ... they actually have morals ... *gasp*, Then again there are people who are just afraid of taking that big step for whatever reason. Don't hate on high school kids for not having common sense ... or maybe they DO have common sense and don't want babies and/or can't get condoms for whatever reason. Maybe they are just AFRAID.
Yeah, this IS a fictional story ... and people like to project their beliefs and/or morals onto the characters. And while I do agree that sometimes ... well, most of the time ... the MC in these things just don't take action like they should we are still talking about fragile young minds who DON'T know what the hell they are doing. As much as I personally want to see progress 'just fuck her' is probably not the contextually correct and/or situationally appropriate answer.