"I'm feeling completely overwhelmed with the outpouring of kindness and support from the people that surround me and from those I have never even met," she wrote. "I want you to know, I read all your comments and your sweet words have touched me deeply. I'm incredibly grateful for all your love as I start this next chapter in my life."
Her personal message accompanied an illustration of Winnie the Pooh and Piglet, which incorporated this phrase: "Piglet noticed that even though he had a very small heart, it could hold a rather large amount of gratitude."
Cuoco announced she had filed for divorce on Sept. 25 after 21 months of marriage. A source close to Sweeting speculated on Cuoco's reason for the split, saying, "She realized she wants to be with a guy who has a job and is motivated."
Sweeting, a tennis player, turned pro in 2007. His first and only title came in 2011, when he beat Kei Nishikori of Japan at the U.S. Men's Clay Court Championships in Houston.
Sweeting later filed a response to Cuoco's divorce papers, requesting spousal support, according to documents obtained by ET.
Cuoco, 29, earns a hefty paycheck from the CBS hit series, The Big Bang Theory, and reportedly has a net worth estimated at $45 million. Meanwhile, Sweeting, 29, is reportedly worth approximately $2 million.
While the divorce was thought to be quick in light of the pre-nuptial agreement the couple signed prior to their wedding on Dec. 31, 2013, Sweeting's recent filings suggest the process might take longer than expected.