During the happy time between season 4 and 5:
Lancelot: What the hell is wrong with you?
Gwaine: I have this weird self-esteem issue where I hate myself but still think I’m better than everyone else. You?
Lancelot: The opposite, actually. I don’t hate myself but I constantly feel inadequate that I can’t live up to an unsustainable standard I set for myself.
Gwaine: Did Merlin find and fix you?
Lancelot: Yes. I woke up in his bed, healed from an injury I sustained while helping him out of a dangerous situation. Then we committed crimes together before I was banished from Camelot.
Lancelot: Did he later find you while on a quest with Arthur while you were still banished?
Gwaine: Yeah, we went to the perilous lands. What was your quest?
Lancelot: We escaped slavers.
Gwaine: Cool. Then you came when he asked for help?
Lancelot: I’ll always be there whenever Merlin needs me.
Gwaine: Lancelot, I think we’re going to get along great.