She didn't care about his past.
Who says this is just in his past? Did he ever say anything about stopping? Even after getting caught I'm pretty sure he didn't say "oh yes I'm so sorry it will never happen again" but instead insisted Dijana look the other way.
It seems obvious that he's separated from Dijana and of course no Instagram model will give him the time of day (not that being married to a beautiful woman stopped him from visiting prostitutes.) So what would impel him to stop his hasty habits especially now that he's alone and doesn't need to worry about anyone finding out about it?
I can only imagine what he's doing right this second while in London. Poor girl, whoever she is.