Billie Lourd is showering Taylor Lautner with love on his special day. On Saturday, the Scream Queens star shared a birthday message to her rumored beau on Instagram, writing, "💙👨👧💙 happy birfday to my #numberonesie." Not only are they wearing matching onesies in the selfie, but Taylor is also giving Billie a sweet kiss on the head. Since the heartbreaking death of her mother, Carrie Fisher, and her grandmother, Debbie Reynolds, the actress has been leaning on Taylor and the rest of her friends and family for support. After the pair escaped to Cabo San Lucas together, she opened up about moving on with a sunny Instagram picture.