Should They Have a Baby on 'How I Met Your Mother'? (VIDEO)

When you're in a relationship, it's important to have rules that are as absurd and as complicated as possible. Or maybe that's only necessary if you have a relationship that takes place on a sitcom. Either way, it's what's taking place on 'How I Met Your Mother' (Mon., 8PM ET on CBS).

[Spoiler alert.]

Lily (Alyson Hannigan) and Marshall (Jason Segel) decided that they would start having children once they had found a "doppelganger" -- i.e., an identical double -- for themselves and all their friends. So far, they've met four of them -- Lesbian Robin, Mustache Marshall, Stripper Lily and Mexican Wrestler Ted. There's only one doppelganger left, and now, Lily thinks that she sees him: Cab Driver Barney.

Does this mean that Lily will be getting pregnant? And not to throw stones or anything -- but is this really a good way to make such a major life decision?