This SI model who seemed to be everywhere last year

This SI model who seemed to be everywhere last year spent the first part of the week hooking up with her back on again boyfriend and the end of the week last week spending the night in the hotel room of her ex.

Both are celebrities but two entirely different professions.

Sports Illustrated model: Kate Upton
Back on again boyfriend: Justin Verlander
Ex: Maksim Chmerkovskiy

Source: http://www.crazydaysandnights.net