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Jim and Pam (John Krasinski and Jenna Fischer), The Office
Who doesn't love a good ol' Office romance? Sure, there were some obstacles in the way — Pam's engagement, Jim's transfer to Stamford — but the slow burn of their intra-office crush, marked by inside jokes and pranks, made their union all the more squeal-worthy. Now that they're married with a baby, it's clear that Jam is as sweet as ever.