Dating with std

I have meet the awesome guy and we been talking for two weeks now and we are finally going on a date this weekend and I’m very excited about it but my concerns about this is last night we was on the phone talking for two hours straight and it was great but we got on the subject about sex and he made a statement that he was scared about herpes simplex one...which I have I think he scared of the fact cause he fully don’t understand that the virus and he though you can catch by smoking a cigarette behind someone that has it and I explain to him it’s skin contact...but I know I have to disclose to him soon but I feel like he won’t give it a try and I really like him but this might be a deal breaker for us...I just want know when should I tell him about my situation cause this is a serious situation😬😬