Photo: Maralee Nichols

Maralee Nichols with her son Theo

The 31-year-old model and the 5-month-old son she shares withTristan Thompsonspent Mother’s Day “together with loved ones,” Nichols' rep told PEOPLE on Sunday.

“Words cannot express how much I love you, being your mommy is my greatest blessing,” she captioned the snap. “You are my world.”

“Happy Mother’s Day to all of the amazing mothers out there,” she added.

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George Pimentel/Getty; maraleenichols/Instagram

Tristan Thompson

Last month, Nichols shared a photo of herself and Theo wearing matching bunny pajamas tocelebrate Easter. “Happy Easter,” shecaptionedthe adorable snap.

In February, Nichols revealedthe special meaningbehind her son’s name.

“I had never been pregnant and had been told I might not be able to have children,” she added. “I couldn’t believe I was pregnant, when I saw you on the ultrasound and heard your little heartbeat I knew I would always protect you and keep you safe. I love you more than you’ll ever know. You bring such joy and happiness into my life. My great blessing.”

maraleenichols/Instagram

https://www.instagram.com/p/CcdTJRiLZTV/ maraleenichols Happy Easter 🤍 1d

He continued, “I sincerely apologize to everyone I’ve hurt or disappointed throughout this ordeal both publicly and privately.”

He also addressedKhloe Kardashian— with whom he shares daughter True, 4, and was dating when Nicholssaid the child was conceived. Thompson also has a 5-year-old son, Prince, with exJordan Craig.

“Khloé, you don’t deserve this. You don’t deserve the heartache and humiliation I have caused you,” he wrote.

“You don’t deserve the way I have treated you over the years. My actions certainly have not lined up with the way I view you. I have the utmost respect and love for you. Regardless of what you may think. Again, I am so incredibly sorry.”

source: people.com