When Irene discovered how much Henry wanted to be around her, she felt she was allowed to be herself and love him the way she wanted to. How much trust she could put into one person regarding her heart scared her.
Yet when she looked at their past together, it was no wonder she had fallen for him so hard.
He went out of his way to make things transparent for her in a way where she wouldn't question herself. If she was ever confused, he allowed her to ask him any questions no matter how strange they might be. It was her first experience with love and he didn't ever want her to feel discouraged.
To think that she might be lucky enough to never experience heartbreak because her heart chose well the first time sounded like a dream come true.