According to my daughter who knows him from the other show he is on, he was in a serious relationship for 2 years and they both agreed to have a break and see other people as they felt they were too young to settle down. But the stipulation was that they didn't get into another steady relationship.
Maybe he really does like Amelia but feels he couldn't date her casually because it might lead to something more serious? At least they didn't jump into a showmance but kept it flirty and light. I think he has been quite a gentleman so far.
