Barney returns to tell the secret. He called the clinic earlier asking to see the doctor. When Britney was confused, Barney started yelling at her. It turns out he was the caller making her cry earlier. He asks if he "oprima dos" and whether she speaks English. "I WANT TO SEE HER!" he yells. We cut to Barney in the office with Dr. Stella. He says he overheard her ask Britney about Stella's hypnotherapist appointment. "When am I going to kick this folliculaphilia?!" Cut to MacLaren's. Barney has to explain that it's a fetish for moustaches. Sweet! Ted laughs, not believing. Robin confesses she has that, a little bit.
Session Nine. Ted has a little brown moustache. He shows up for his appointment. Britney is reading a copy of The Power of Me. She compliments the 'stache and says it's like Tom Selleck, only a million times handsomer. She pretends to call the doctor and tell her that "Magnum" is here to see her. "Just kidding. Stupid," she says, all wounded. It's kind of cute. In the exam room, Dr. Stella comes in from another rushed lunch and sees the moustache. She cracks up. Back at MacLaren's, Barney is laughing too. He explains why. We cut to a year before when Barney bet Ted $10 that he could get him to grow a moustache. Nice bet! It paid off. Barney says he would have done it for free. Ted is mad that he wasted a session. Now he prepares to hear "No" at Session Ten. Lily tries to convince Ted not to give up because Stella likes him. It turns out Marshall went to see the doctor, too.
Cut to Marshall's session. He's seeing Dr. Stella about dry elbows. He asks if she's seeing anyone or if she has anyone she's "Interes-Ted" in. She finds an irregular mole on the back of his head. Marshall has a mental freak-out. Stella starts to say something about a patient, but Marshall yells out that he's dying. Later, he's relaxed. She tells him she has a crush on a guy with a butterfly tattoo. Marshall leaves. He accidentally leaves behind his book. It's The Power of Me. It comes full circle! Back at the bar, Ted is thrilled about the crush.