My fiancé got a penis infection but he has no idea what caused it. Can you tell me the things that cause a penis infection so we can find out what he might have did?

Psorious..

Huh?

What kind of infection did he have? Did he get medication for it?

I believe it's a bactieral infection

You don't need to "think" or "beleive" you need to visit your family doctor and find out what it is, get it treated properly.

my fiance got a penis infection but he has no idea what caused it. Can you tell me the things that cause a penis infection so we can find out what he might have did?
Normally males doesn't wash their penis after they urinate, it is advisable to wash after urination. Moreover before mating it is mandatory to wash both husband and wives genetals, which husband doesn't wash his penis properly and as such he mates, the infection spreads to wife, as vagina is more sensitive, the infection goes high.
So kindly see to that it is washed properly.