Barney and Lily are definitely my brotp but honestly if I didn’t love Swarkles so much I might just ship them more than Marshlily.
Besides Robin, Lily is obviously Barney’s real best friend. She actually listens to him and treats him like a real person (and Barney is the only person she can hold her tongue for) and cares about him. She sees him as a valuable member of their little group, and loves him just as much as she loves Ted and Robin. They even acted like they were married for an episode, and it worked.
They’re both awesome, and they both tell each other personal stuff and are awesome bros. He obviously cares about her, and she cares about him. Ted treats him like trash, Marshall kind of seems distant from him imo, and Robin is his soulmate…so brotp goes to Swarlily <3