Parodied: Despite sexual incompatibility, cultural differences or the fact that one of them isn't even human (guard dogs, etc.), have never met before or been in the same time zone before the job, this happens. Hilarity Ensues.
Zig Zagged: Bob pretends to be both Alice's bodyguard and boyfriend, because Alice's father wants her to stay single for a few years. Then Bob becomes the mask but keeps it a secret in the name of professionalism. Then Alice confesses to him and he reciporcates.
Averted: Bob and Alice don't fall in love, and their relationship remains strictly professional.