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Though the 28-year-old pop star's rep had "no comment" for ET about engagement rumors, Perry and Mayer were all smiles as they left Vincenti restaurant in Brentwood, Calif., on Feb. 14, with Perry sporting a red-stoned ring.
Mayer recently commented to CBS' "Sunday Morning" about his relationship with the musician, calling it "very human." "I don't feel like I'm in a celebrity relationship," the singer/songwriter told Anthony Mason. "For the first time in my life, I don't feel like I'm in a celebrity relationship. I really don't. I'm not in a high profile, I know it's high profile. It's hard to explain."
When asked about marriage, Mayer answered, "Of course. I mean, I'm still the kid from Connecticut. That's what you do."
Katy was previously married to funnyman Russell Brand, but the two announced their separation in December 2011.
Keep clicking for more photos of Katy and John on Valentine's Day. ...
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