I don't think waiting a certain time before having unprotected sex would do anything at all. Do you know if you have type 1 or 2? If you don't know, you should find out because if you have type 1, there is a good chance he already will have antibodies for type 1 (the type that typically causes cold sores), and thus, would have pretty good protection from getting it genitally from you. If you have type 2, and you guys are really serious about not using protection, have him go get a test to see if he has antibodies to either type. You never know, he may already have been exposed to one or even both, and just never had any symptoms. My boyfriend, who gave it to me, never had any symptonms of either coldsores or genital sores at all, and still never has, but yet he does have it. Good luck