Fun story:
I got tested a week before I moved across the country for law school, because I wasn’t sure how easy it was going to be in the pretty conservative state I was moving to. All clean.
The first guy I dated while I was there had some weird symptoms pretty quick into our sexual relationship. I suggested he get tested and he was MORTIFIED by the suggestion. He was PROUD that he had never been tested, because he only slept with “reputable women.”
In a twist that should shock no one, he gave me chlamydia. After weeks of trying to blame it on me, I finally printed him out literature about how chlamydia can be asymptomatic for years, then pop up physically when the person is under a lot of new stress (eg: starting law school). I dropped it off when I was picking up the shit I had left at his apartment.
So yeah. If it’s a problem, he’s not someone you want in your life.