Fat Barney Dating Robin On Relationships "Every Moments A Battle" - HIMYM

How I Met Your Mother Barney Stinson gets fat/obese dating Robin and explains his view on relationships as Barney dates Robin and also Barney and Robin order pizza

Have you noticed how beef ribs used to always be disgusting and then recently, they found a way to make them really delicious instead?
Okay, Barney, I'm going to go ahead and ask you this head-on
Are you happy with Robin?
Are you kidding?! How could I not be happy with Robin? It's Robin!
So are you happy?
I can't believe you would even ask me that.
I mean, yes, we fight all the time, but you know what they say about relationships: Every moment's a battle.
So are you happy?
And you know what goes hand in hand with fighting? The makeup sex.
Which is different when you're in a loving, long-term relationship.

Barney and Robin Ordering pizza

Heads we have sex, tail we order a whole pizza and just lay here moaning.
Oh, great. Let the coin decide.
Which was pizza again?
Tails.
It was tails.
Sex-- am I right? Thank God that's mostly over.
I'm still hungry.
You hungry?

How I met your mother episode: season 05 episode 07 the rough patch.