“Big Bang Theory” star Kaley Cuoco’s boyfriend Karl Cook may have some major competition for her affection and attention.

On Wednesday, Feb. 22, Cuoco revealed that she has a new man in her life to her 3.2 million followers on Instagram. She shared an adorable video of her playing and dancing with a toddler, who is dressed in a black and white striped shirt, gray jeans and black shoes. The actress looked equally adorable in her pink patterned pajamas. In the caption of the clip, Cuoco jokingly warned her equestrian boyfriend, Cook, that he might soon be replaced, writing, “Look out @mrtankcook ... there's another man in my life!”

The short clip also sparked rumors of another development in Cuoco’s relationship with Cook. Her followers noticed that she was sporting some bling on the ring finger of her left hand, and this triggered rumors that she and Cook might be engaged. However, the actress later edited her caption and added a clarification for the ring, telling her fans clearly that she is not engaged to Cook. According to the actress, the ring was just a prop and was actually part of her costume as Penny, who is married to Leonard (Johnny Galecki) in “The Big Bang Theory.”

But while they may not be ready to tie the knot, Cuoco and Cook are still enjoying a good relationship. In fact, the actress has been posting some sweet photos with her boyfriend over the past several days. Last week, the pair went furniture shopping for the first time together. To commemorate the milestone in their relationship, Cuoco shared a mirror selfie of them at the furniture store, showing Cook kissing her affectionately.

Another photo the actress posted Tuesday, Feb. 21 showed the two of them inside a car. The couple rocked matching sunglasses and casual looks, with Cuoco sporting a black shirt and her beau a white one. Cuoco revealed in the caption that she has been “missing her blonde buddy love.” Check out Cuoco’s Instagram posts below!

Catch Cuoco when “Big Bang Theory” Season 10 airs Thursdays on CBS.