In fact, the creator of the show strictly stated that they will only ever have palpable chemistry, and that's it. That's why it was so shocking to see Mulder and Scully kiss while they were in an alternative universe. So, technically, it's non-canonical, but it did give the fans what they wanted!
Jurassic World
Jurassic World had its share of surprise moments, but the moment that velociraptor trainer Owen Grady (Chris Pratt) and Claire Dearing (Bryce Dallas Howard) kissed was easily a fan favorite. Funny enough, it was planned, but kept under wraps. The only person who didn't know was Howard.