The newly single singer didn't attend the festivities last Wednesday in order to spend some quality time with the Stealth star at an exclusive lodge in nearby Deer Valley, Utah.
"She is really spontaneous and fun."
Biel, 24, stayed with Timberlake at his $1,950 per night, four-bedroom condo at the Trail's End Lodge and the couple was spotted snowboarding the next day at the picturesque Park City Mountain Resort.
The pair stayed at the lodge until Jan. 26 and a source at the resort says, "Justin and his group were fantastic guests."
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