The Bachelor and Dancing With the Stars alum posted an Instagram picture Monday of his three "Sleepy girls."
The adorable shot shows Sean's fiancé taking a catnap on the floor with his boxer, Lola, and chocolate Labrador, Ellie.
And while it's Catherine who will take Sean's hand in marriage, Lola and Ellie will stay close to the blond hunk's side.
The groom-to-be opened up to People early on in the Bachelor process about his love for his pooches, saying, "For so long it's just been me and my two dogs, and I'm certainly not going to replace them with any woman."
"For many years, my dogs would sleep in the bed with me," he admitted. "I'm a big guy and I've got two good-sized dogs, so it's a full bed. Then I just realized one day, 'Alright, if I get married and a woman's going to join me in the bed, there's not going to be enough room.' I had to break the dogs of the habit of sleeping in the bed."
Not to worry, though. For one thing, Sean and Catherine aren't sleeping together until their wedding night, and for another, Lola and Ellie are already adjusted to nights not spent in their human's bed.
"They're very intelligent dogs; they pick up on things really quickly," Sean explained. "They learn pretty fast."
And from the looks of things, Lola and Ellie learned pretty quickly to fall in love with Catherine!