CBS DETROIT – The lovebirds are at it again. Detroit’s favorite celebrity couple, star pitcher Justin Verlander and Sports Illustrated swimsuit model Kate Upton, posted pictures of themselves Saturday at Fenway Park, where the Detroit Tigers defeated the Boston Red Sox Friday in the first game of a three-game series.

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Upton has evidently been enjoying Tigers games in Detroit as well. She posted Sunday about enjoying the weather in Michigan and included a photo of herself – apparently at Comerica Park – in a baseball cap featuring the old English D.

Though they have not spoken publicly about their relationship, Verlander and Upton have made no secret of it. They’re frequently spotted together and tweet at each other too. Upton tagged Verlander in the following post, which suggested a combination of the stars’ names.

Upton seemed to approve.