IS JOHN MAYER CHEATING ON KATY PERRY WITH HIS BEST FRIEND’S GIRLFRIEND ALLISON WILLIAMS? – THERE’S THREE WAYS TO LOOK AT THIS

Can it be that the beautiful union that is Katy Perry and John Mayer now lies in tatters, with him celebrating her embarrassingly taking Jessica Simpson’s sloppy seconds along as her plus one to the Presidential Inauguration by dipping his toe (or more) in the dating waters of Girls star Allison Williams?

Well, that’s what people are saying as he was spotted by NYDN spies with his arm around the TV actress at the Jane Hotel in New York on Friday night.

And, after that they apparently had Mexican food in the West Village and “seemed to be in an intense conversation the entire night. They stayed pretty late until the restaurant was clearing out” says the onlooker.

Williams, 25, told Chelsea Handler on her Monday night show that she watches Girls sex scenes with her dad, and is reportedly dating Mayer’s friend Ricky Van Veen – who is the founder of the not even mildly amusing website College Humor. 

Here are Mayer and Van Veen in similar and not even mildly amusing ironic Christmas sweaters. That beard on John makes him look a tad aroma de Rohypnol fanatic, but anyway I digress.

There’s THREE ways to look at this: Was it just an innocent late-night dinner date with Mayer boring Williams about his most interesting (to him) innermost thoughts about himself?…

Or did Williams, Mayer and Van Veen pop to the latter’s East Village apartment to share more than Mexican take-out on Friday night or has John decided that he no longer has a wet soft spot for Katy Perry that makes him want to golden shower her with errm affection and has moved on to his friend’s former girlfriend?

YOU decide and let me know your thoughts below.