The actress, who starred as Jade in the original Hangover, spoke to PopEater about not being a part of the sequel, admitting that though she would have liked to have been involved, she does not feel depressed about being excluded.
"I guess I thought it would have been romantic if [Stu and Jade] had ended up together, but that wasn't their way of thinking," Graham said. "I look at it from the positive that it really was fun to be in the first one."
Graham went on to state that she was surprised The Hangover became so popular.
"[Todd Phillips] is a very commercial film director so I thought maybe it would make money." Graham said. "But I didn't think it would be, like, a comedy classic."
The 41-year-old said in February that her romances with fellow actors often end in disaster, stating that these relationships never last beyond filming.
It was reported in October 2010 that Graham would not be returning for the Hangover sequel.
Watch the trailer for The Hangover Part II below: