Which on-off-on Couple Were Spotted Shopping Hand-in-Hand?

Can you figure out which pair of on-off-on-off-on celebs are apparently once again on — judging by the fact they were spotted holding hands while grocery shopping in Los Angeles on Wednesday afternoon?

It's none other than Drew Barrymore and Justin Long!

The occasional couple suddenly got hand-shy when they noticed they had been spotted by a photog. C'mon... just admit it!