Article continues below advertisementChanning Tatum can't stop showing love for his girlfriend, Inka Williams.The Magic Mike star, 45, celebrated the model's 26th birthday with a series of sweet and intimate posts on Instagram Stories, giving fans a peek into their beachside getaway.Article continues below advertisementIn one clip, Williams rode on the back of a four-wheel ATV in a colorful micro bikini top, gray denim bottoms and a green cap while Tatum, dressed in a white tank and yellow scarf, drove across the sand.