Jon Hamm and Jennifer Westfeldt
Marriage isn't necessarily the key to making a relationship long-lasting. Need proof? The "Mad Men" star and his longtime love aren't even thinking about walking down the aisle -- and they've been together quite some time. But how long exactly?
BING: How long have Jon and Jennifer been a couple?
FIND: See more photos of them together
SEARCH: See Jon and Jennifer working together
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