Quote from Barney in We're Not From Here
Robin: I'm evolved, and I'm enjoying living my life a little bit closer to the way Gael and I did in Argentina. Barney: Please, vacation romances have an expiration date. Gael's got a "best if banged by" sticker on him. Once your romance starts to stink, you'll dump his ass down the drain like sour milk and go back to being "unevolved Robin", the one we actually like.