Chapter Text
There is a steady relationship between Lancelot and Galahad which has not wavered since Roxy introduced herself to him in training.
In the beginning they go on many missions together. In the wake of Valentine taking out most of the world's governments, many of the jobs are too massive for a single agent. Within Kingsman many duos have become stable pairings, and Lancelot and Galahad come to each other's aide frequently enough to be recognized as one of these sets, hence the frequent cooperation.
There is a natural balance between them, something they felt almost immediately. She's calculating, professional, will get the job done regardless of personal feelings. He is passionate, hot-headed, creative, and reckless. She gets strung up, snaps, and he's the only one who can talk her down; he gets to caught up, too invested, acts irrationally and she makes him see sense.
Merlin picks up on it quite quickly, watching it develop from nothing (not really from nothing, it seemed like there was something between them from the very start). Initially the idea of it it was a threat: a threat of attachment, dependence, loyalty to someone or something other than the agency. But it becomes clear that the relationship between Roxanne Morton and Gary Unwin is much more mature than that.
Before all else they are Kingsman agents. Roxy has pointed a gun to Eggsy's head with all intentions of ending his life. He is not her weakness; she would not hesitate if it was him or the job. But she will always have his back, a mutual agreement. They are in no way dependent upon each other, but the level of trust has created a comfort that doesn't exist for either of them elsewhere, and they manage to have faith in each other without being dependent.
When Roxy fails to communicate with HQ for a fourth day during a mission in Katmandu, the situation must only be whispered of and Eggsy is on the first flight out of Peru to get her bloody comms turned back on and bash the necessary heads in. When he finds himself in a sticky situation with the favorite wife of a drug lord, Roxy sets a new record for most guards taken out unnoticed on camera before driving a moped through a wall to retrieve him.
Merlin doesn't worry. He doesn't have any grasp on understanding their relationship — and enigmas are few and far between for a man with as many degrees as him — but he doesn't worry about it.
Things even out eventually and the agency returns to its more regular role, moving in the background. Agents are able to take on missions separately, each operating underground and alone more often than not. Lancelot goes undercover for seven months. Galahad is stationed in a remote location for the four that follow.
Galahad and Lancelot each always asks for a status report on the other agents whenever they get the chance. Merlin is tired of running through the complicated and mostly classified list of each agent every time one of these two asks, and he theorizes that it is just a veiled way of learning about each other. Merlin tests this theory by slipping unprompted updates about Lancelot to Galahad, and of him to her, during their regular briefings. Sure enough, each stops asking about the rest of the agents.
His only concern is his own fate on the day when he has to report something negative to either of them.