Justin began dating Britney in 1999 and broke up in 2002, when Justin was 21-years-old. दिया his reference to how young he was. It seems like she may just be the girl embarrassed द्वारा his mother's interruption.
This of course after Justin admitted the two were in fact intimate while they were dating.
(As Britney said: when आप find that right person आप just know,)(I will प्यार to be with him forever i would, i would ", )