The only way I'd AGREE to it is to go with him to a clinic, have a 24 rush done on every single STI there is, spend that 24 hours with him, get the (assumingly) clear results, then, ok. Naturally he's paying for your time.
Even then....yeah. Incubation & all that jazz. Ok, forget I wrote all that lol.
It's all awfully convenient, no? Plus it's icky🤢. It does seem like he's ✅allllll the boxes 1 would need to feel comfortable, which in itself is a red flag ⛳️, yes?