To me that's another crossed line that says a lot about his character.
He's not only a serial cheater, he's ok with crossing that line re. paying a stranger for sex. Which is really a travesty of what sex should be - between truly consenting adults who want to do it.
There's also the ethics of using prostitutes. Naive people (and ive seen plenty on here) like to think prostitution is pragmatic, independent British women who choose to do it and get well paid.
Read UK punting reviews and see what it's really like ..
It's predominantly immigrant, foreign women with poor English and there are gangs involved. Usually Eastern European, South American, Asian (in the "massage parlours") etc The punters remark if they speak much English because they're used to no/poor English, they comment on their "typical Eastern European attitude" by which they mean surly, and clock watching.
Wonder why they're surly and clock watching (!)
They jokingly refer to the gang member pimps as Serghei. Would those pimps, who skim off them, just let them leave and get a shop/bar etc job if they wanted to? Not fkg likely.
The punters comment on things like being irritated being kept waiting by the previous "punt" and about things like the prostitute having to shag them on a mattress on a flat's kitchen floor because the bedrooms were all in use.
This is the Tesco end of the industry, the majority of it - instead of the Harrods end that people, including some MNers, seem to think is typical.
It is "staffed" by some of the most disadvantaged, underprivileged women in the UK.
The punters don't want to know. They don't care as long as they get their end away, your ex falls into that group. They can never know the true circumstances of the prostitute - no matter what BS he says if challenged about it, he can't know and ultimately they don't care. It's clear from their reviews that they see them as live sex dolls.
It's just another sign of his character.
With the serial cheating and signing up.to sex sites and using prostitutes; he sounds sex obsessed, obsessed with his probably unimpressive todger, degenerate, disordered etc. I've met guys like this and they don't change. Last time I saw one of them he was holidaying in Thailand (!)