Ted: So, you completely rejected the guy who's been obsessing about you for 16 years, and he was okay with it? Whoa. Is creepy Daryl more emotionally adjusted than I am?
Future Ted: [v.o.] Kids, sometimes in life you'll make a pit for someone in your mind. But ultimately the only person in that pit is yourself.
[elsewhere:]
Robin: I'm sorry. Just seeing you with Barney has brought up some old feelings, and I... I really don't like feelings. But that's not your fault or Barney's fault. It's just really hard seeing you with him.
Future Ted: Which means there's only one person who can let you out of the pit.