How I Met Your Mother Season 4 Episode 21

Marshall: Ted's got a lot of crazy stored up. We thought we'd get him to say 'I love you' before he even makes contact with this girl.
Barney: And he's exhibiting all the tell-tale signs.
Marshall: One: he joked about getting married.
Barney: (Reading Ted's text) You like architecture? We should get married. Haha. LOL. Just kidding?
Marshall: Two. He made a crazy way-too-soon trip suggestion.
Barney: (Reading Ted's text) I like beer too. We should totally go to Germany together! LOL! JK. LOL!
Marshall: Three. He got way too personal way too soon.
Barney: (Reading Ted's text) Yeah, my parents got divorced a couple years back. It was really tough. LOL.
Robin: And he clearly doesn't know what LOL means.