I don't know about Gonorrhea but Chlamydia is the one that you can have for ages without knowing about and is easy to treat but because it has a tendency to go untreated, can lead to infertility
HPV test is pretty standard along with a pap.
You can transfer it by gobbing in each others mouthes when kissing. Also very strict rules in boxing, an HIV boxer is a no no, all that sweat and blood mixing.
i know a few young girls who'd be tested twice a week if it was between sexual partners