What do you mean by "intend to rape"?
The three points required for rape are penetrative sex (with a penis specifically); refusal of consent; and absence of reasonable belief that consent was given.
As I understand it -- don't watch Corrie:
1. the first test is met, as Aaron seems to concede;
2. The second is met by Amy having rolled away feeling sick, which amounts to changing her mind about what they were doing and preferring to take rest; separately, that Amy was too dunk to be able to give consent is relevant;
3. The third is met because any reasonable person faced with that situation would allow the other party to take rest, and wait until both were feeling "up to it" before initiating penetrative sex.
So, yes, it's rape. It might perhaps be difficult to establish this in court, particularly if one part of the prosecuting case would rely on Amy's inability to give consent, but how drunk she was may no longer be possible to confirm.
It's not about intent to rape, nor about any additional violent behaviour/assault surrounding the act. If Amy didn't consent, and if Aaron cannot reasonably have believed that consent was given, those are the two questions to answer.