there's that definite pedophiliac vibe coming through the Eleven/Amy relationship.
I mean, there's this weird implication that the Doctor intended to come back and take little child Amy as his companion
and obviously their views of each other are colored by their first meeting.
But when a lonely adult man decides he wants his only friend to be a little girl ... I mean, there's a vibe there, and it can't be escaped just because of the science-fictiony premise.
She grew up and her feelings may have changed but they're always colored by what she saw as a child - and the same is probably true for him, as well. It's just this odd thread that runs through the relationship.
Wendy/Amy is ready for a serious adult relationship, which the doctor/Peter cannot give her. Except, gloriously, Amy is NOT like Wendy in that she is perfectly happy to skip the damn grown-up relationship and move straight to the snogging.