Jennifer Aniston's low key relationship stands in stark contrast to other, more combustible celebrity relationships. Her marriage to Justin Theroux is mostly out of the public eye, save a few choice moments that they share. And it seems to be legitimately sweet, as he still drops everything to hang out with her . Not only that, but she's a total feminist . Major points for that. The pair were on vacation in Mexico when Theroux posted this simple but sweet birthday message. That's a model for social media couples. Nobody wants to see you hugging all over their feeds. At best it's tacky, at worst it's performative. Like, you're not Jay Z and Beyoncé. And even they don't post all that much. Phew. Anyways, here's the picture.