Gf/bf relationships are pure non-sense, especially at such a young age as ours. Thinking that "love" will last forever is just ridiculous. Not to mention it's against ALL religions. On the other hand, people shouldn't even THINK of relationships until they are fully grown, able to protect themselves, and provide adequate support to their family. Other than that, I'm afraid to say it's wild dreams, or just the two having fun, and the latter being forbidden ethically and religiously.