They say age is only a number ... right?

Mary-Kate Olsen just got engaged to her boyfriend of two years, Olivier Sarkozy, according to Us Weekly.

The 27-year-old "Full House" star and the French banker first went public in 2012, and they've had no problem showing some serious PDA nearly every time they step out. 

The couple already share a $6.25 million townhouse in New York City, and Olsen's family seems to approve of her much older beau. 

This will be the first marriage for the blonde beauty and the second trip down the aisle for Sarkozy.
Olivier was previously married to Charlotte Bernard, whom he has a 12-year-old son and 10-year-old daughter with. 

While their very public displays of affection occasionally creep us out, we can't wait to see Mary-Kate in a wedding dress!

Are you surprised by the engagement news? Tell toofab in the gallery below and check out some of their recent PDA in the gallery above!

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