What’s meant by tznius issue?
As a rule, they say, don’t marry someone relying on them changing.
One can marry someone if one can accept how they are right now, & hoping that they’ll change. But one has to keep in mind that they might not change, & be okay with that possibility.
Some things might seem like a tznius issue, & are actually not, more just a different norm in the place they live.
Definitely do NOT do what viyoel moishe recommended!!! He doesn’t know what he’s talking about (sorry to sound so harsh, but needs to be said). Whatever the average bachur would do, would be blunt. It’s not your place to do that. Even once married, this is a very sensitive area. When dating, nothing to talk about!!!
Hatzlocha rabbo.