In a way Aden did all he offered to. He offered to take Melody home instead of Miles (knowing that Miles needed to stay to watch over the formal) and he did so. I don't think he is in the wrong at all. Staying home with her to make sure she is alright is more then he requested to do and it was the night of his year 12 formal. He also asked Annie and Jai to keep an eye on her which they said yes so he followed through in making sure Melody was safe for the night. Imo in Nicole's situation, She offended him and thought following him to make sure he will be fine would only make the situation worse between them. If she did, Aden could've possibly teared her apart(not literally) as we all know he is capable of it.