Not to encourage your pessimism, but when asked what he liked about White Collar, he touched his nose. That's a common tell for a lie or for discomfort (obviously not 100% reliable, but the odds go up).

I only just now watched this episode (Monday morning). I loved it too! Also had the "pregnant" thought when El said she had something to tell Peter, but then realized she was holding a glass of champagne as if she were fully intending to drink it. Whew!