Riftan Translation: he’s embarrassed about his past and is afraid his background makes him unworthy of Maxi so he’s not comfortable sharing it. He still thinks she’s a pampered noble who’s too good for him and was unfortunate enough to be forced to marry him (slight spoilers below!)…
When he went through so much danger to become a mercenary at 12 to eventually work up the ability to MAYBE be worthy of her. It’ll still be a bit before Maxi finds out they’ve met before and how much he’s loved her since then. Q.Q