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