[I am happy for them] is all you’ll let yourself say out loud, because if you said anything to the contrary, well, that would make you the most awful person on this roof top. So I’m gonna give you an out.
And how are you gonna do that?

“Question: Will we see Robin telling Barney about her inability to have children on How I Met Your Mother? —Tiera
Ausiello: No clue. But you will see her hold Marshall and Lily’s son, Marvin. “We have a fun episode coming up about Robin and the baby,” previews exec producer Carter Bays. “It’s almost based on myself. I feel like it’s a story that I could have taken from my own life a little bit, about the abject fear about holding a baby and how scary that is if you’re not someone who is around babies much or knows babies. It’s Robin overcoming her fear of holding a baby.” — TV Line (x)

“When I watch that scene, I always think, ‘It’s Robin.’ He has his fiancée asleep on his shoulder, and he’s thinking about another woman.”Craig Thomas.