Alyson Hannigan and Jason Segel played a couple on How I Met Your Mother for nine seasons. In that time, their characters, Lily and Marshall, were an example of a partnership everyone could aspire to. However, Hannigan had to put her foot down when it came to kissing Segel.
While there was no apparent animosity between them, the former Buffy the Vampire Slayer actress revealed she simply couldn't stand the fact that her on-screen husband was a smoker in real life. "I cannot stand cigarette smoke. It's like kissing an ashtray, and he's trying to be polite by having gum or mints, but it doesn't help," she told Digital Spy in 2008.
However, Hannigan was totally eager to help Segel kick his nasty habit. As she explained, "When we started the pilot [for the show] he was like, 'Get me to stop smoking, I'll be your best friend.' So we did this bet where he would owe me $10 every time he had a cigarette. After the first day, he owed me $200." Being in debt to his co-star got Segel to quit cold turkey ... for a little while. According to Hannigan, once Segel started getting "stressed out," he began lighting up again.
It's unclear how the duo got over Hannigan's repulsion for the remainder of the series, but it's possible they kissed a lot less than the writers were originally intending. Fortunately, the actors remained on friendly terms despite their nicotine dust-up.
