What the hell is a pilot

Aaron's had a hard time in the romance department for quite some time.But after mending some old friendships he gets a first chance at love. Lisa has always been the girl in the background the girl who's extremely average but in a matter of 12 weeks she gets thrown into a fierce battle of love. Liam has always hated his old best friend for apparently stealing the love of his life but due to new information his best friend was never even into his love now he has a second chance at a girl he's loved since he can remember but he's with another girl.