The Sexy Back singer, who has been dating Biel for more than a year, was spotted shopping for rings at Tiffany & Co. in New York.
A source said, "Justin was really taking his time looking round the rings. He made the staff get a couple out of the cabinets so he could properly look at them. He didn’t buy anything but told the manager he would think about it."
Jessica Biel recently revealed that she and Timberlake have a fondness for playing games. Rather than go out and party, they prefer to stay home and play Scrabble. Biel said, "We do a lot of dinner parties and we play board games. I absolutely love Scrabble!"