Hanging Out With John Mayer is Making Jen Look Old?

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In eleven days during July, Jennifer Aniston logged nearly 11,400 miles to be with John around seven cities in four countries while he embarked on his tour.

But the long days and nights are taking their toll on Jen. She is not 25 anymore. A friend explains to In Touch: "Jennifer's lost a few pounds since she started dating John. It's been exhausting and exhilarating at the same time. They're always on the go and that's why she's losing weight."

Jennifer’s hectic schedule is damaging her youthful looks: "Stress, travel and exhaustion can have a dramatic effect on people's faces even after a few weeks." “She looks exhausted and drawn, “It gives her a hungover look, even if she hasn't been drinking. Unfortunately, it has a greater effect because she's 39 and not 25."

This weekend photos of John Mayer surfaced of him in a hot tub with another woman that was not Jennifer Aniston. See picture here. Us Weekly identified the girl as "the wife of a band member." Source and Source