This guy isn't easy.

And she mustn't feel sorry for what she's done.

If he's so concerned about his past, and "OH GOD" he's in so much pain. Why the hell did he go get himself a girlfriend? He could have just stayed single, solved his past issues and got over it; then thought of having a girlfriend and be fair to her. He can't be with a girl and think of his past. What is she a rebound??

I believe if he wanted to get rid of his past, he could have deleted this account ages ago (if he believes his account has his passsst, which I doubt it) not remembered it once she told him.

Account is no be deal now, he's the problem now.
She got to be aware from this guy, he might be just using her for the sake of getting over his past or whatever.

He ain't innocent as shown.