When I got together with my now h, he hadn't had many partners - but he had had sex without condoms with one of them. She was 9 yrs older than him and he regularly seemed to encounter exes of hers when socialising in the area. He claimed he used condoms for any others, he appeared sincere/truthful.
They stopped shagging several months before we started seeing each other.
He was reluctantly using condoms with me. He didn't like them. He'd have left them off very easily if I'd acceded. I started having more and more contact without condoms. I insisted we both have std screening. He thought it was totally unnecessary, said he'd only had sex without condoms with this older ed and that she was very conscientious and careful and organised about std screening. She told him she got screened regularly.
I insisted until he did it. There was much moaning about not wanting swabs in his pee hole, it would horrendous etc etc. He went under pressure. The doctor gave him a course of antibiotics and a leaflet on clamydia with the words "I think you might have this fellow"
I then had to go and get a course of antibiotics due to the condomless contact we'd had.
This was how conscientious and careful his ex was.
I also heard during the course of our relationship that he'd had to complete delivery of some pamphlets or similar that she'd taken on as a side hustle to make money - be Suze she was indisposed because she's had to have treatment of abnormal cervical cells. I'm in my 40s and this was ages ago so it was before it was even made clear that that is mostly due to HPV. So it's highly likely she had HPV, it's very possible she gave that to him too, and i could only hope his system had cleared it/not been infectious in the interim between their fwb (following relationship breakdown) and our relationship.
If I hadn't pushed and pushed this man who thought it was totally unnecessary and was convinced of the conscientiousness of his clamydia and probably HPV infected ex; I'd have been left with clamydia that might not have given clear symptoms and could have damaged my reproductive organs and affected my fertility, due to those two fkg fools.
That's why many mn'ers are so keen on std screening.
Many woman on here who've been cheated on have ended up with STDs.
Posters don't want their physical health affected by their feckless, skanky partners (and their partners skanky, feckless cheating partners) as well as their mental health.