A riddle?
hmmm If oral is safe, that rules out HPV, Herpes, Clamydia, Gonorrhea, Syphillis.
Intercourse MAY be safe... i would assume HIV then... depending on the type of sex (and some other factors) there is a chance of not getting infected...
Conclusion, if he says "has something" they should both be fully tested before doing any unsafe sex.
Hi i would encourage Safe sex Always wear a Condom Take care