Responses
It’s the way he harps on about not being bewitched and straying from the path of a knight. . . .but that’s literally what he’s been doing even before she got involved. She approached him after being saved and admiring him. It’s very likely that his “true love” was similar. He didn’t asked to be called a hero but he didn’t reject any of the benefits of that title either. His entire family loves and supports her and yet he still thinks she is the one who’s the problem. I could bet money that his family has never even met the mistress #-.-)

I believe in true love, I really do, but this man thinks what he has is “true”? If it were the case, he would either have given up his title to be a commoner or figured out a way to have Aria titled as a noble so he could marry her.
The fact is he took the coward’s way out. It’s not true love, it’s selfishness. I’m betting he likes the class difference between him and his lover, either to stoke his own ego or to “preserve her innocence”.