... in the form of her now ex-boyfriend Nate Lowman.
Mary-Kate and Nate had been dating since 2008 and are no longer together, according to Us Weekly.
The 23-year-old will now have more time to devote to her work ... whatever that is.
Mary-Kate Olsen Drops 170 Pounds ...
2/24/2010 7:47 PM PST BY TMZ STAFF
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