The 18-year-old actress said it's something that they both want to do, but it never quite happens.
Appearing on Live! With Regis And Kelly she said, 'We have yet to do that and it really bothers us. It does.'
'It's so funny. It's either one way or the other. She'll have someone or I won't or I will and she won't. We're never quite there.'
But she insisted that despite their fame, she still manages to do normal things with Taylor.
'We go to the movies, go get yoghurt, go to dinner, hang out and go to the mall.
'It doesn't really stop us. We're very appreciative of our fans and will stop and take pictures.'