Joe Schweon knew instantly that his fiancée was cheating. Normally chatty, his bride-to-be was suspiciously eager to get off the phone when he called from a business trip this spring. Lindsay Hoffman’s little secret? She was watching “Mad Men”—a show the couple had been enjoying together—and she wanted to get back to Don Draper.

“Joe travels a lot for work,” said Hoffman, a software saleswoman from Brookline, by way of excusing a solo binge that took her through the show’s entire third season and part of the fourth while her betrothed was on the road.

“I did feel bad,” she added, “at first.”

Beth Teitell can be reached at bteitell@globe.com. Follow her on Twitter @bethteitell.

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