We'd dump him just on the basis on that bowtie. Copyright: [rex]
Yep, the pair are believed to be so smitten that a big fat pop star wedding could be on the cards.
Appaz, John and Katy "really do bring out the best in each other".
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A source told The Evening Standard that John reckons Katy is different to the other million women he has dated in the past.
"John really likes the fact that Katy is so independent and not needy and clingy like the other girls he's dated," they told the paper.
In case you have forgotten, these 'other girls' include Taylor Swift, Jennifer Aniston and Cameron Diaz.
The source added: "This is the first time John's felt so strongly about a girl. She's played her cards perfectly... It wouldn't surprise me at all if he proposed."
The pair have been dating for just under six months and despite our reservations, seem properly loved up.
"With John, Katy feels like herself. She wants to nest. She's gained a few pounds, is taking a much-needed break from work and perhaps is even getting her mind and body ready for pregnancy."
Whoa there! One thing at a time, eh?
However, Katy has said in the past that she would 'never say never' to getting married again.
We say, don't rush into anything Katy - we all know where that got you last time.