About herpes?

hi everyone. i am very well edcuted about genital herpes hsv 2 which i dont have but my boyfriend do have hsv 1 went down on me couple times before i knew been with him for a couple months and never had an outbreak on my lips or genitals he said the last time he had an outbreak was years ago in high school but never knew it was cold sore so me and my friend were talking sbout it and i was telling her how its not included in std panels but anyways sh was saying she dont believe people dont get symtoms they do or are mild that they mistake it for another condition or to scared to goto the doctor to find out or brush it off. i can say i agree with that because my boyfriend was saying up and down to his doctor that he never ever had symtomps in his life till couple weeks we talked and said he remembers having something on his ips a couple years ago but never thought it was that i feel like a lot if people do get symptoms but mistaken it for something els for example my friend obgyn told her that genitals are very very sensitive that you will more likely have an outbreak speicaly if you prone to infections which she right my point is the doctor said when people sah they never had symptoms they just embarrsed or dont remember having symptoms but most likely did jst mild ones but anyways my boyfriend never ha symptoms wit me for cold sore and he would suck on my whole body and no smptoms anywhere and i know after a couple year the shedding is less but im still worrie he could have prob give me it even thoght i have never had an outbreak anywhere in my body that i know off nd was checked in august for both hsv 1/2 and negative for both. anyways i was gon get sum abreva chapstick for my boyfriend which is good fr hsv 1 to prevent an outbrak from comming but i would that be able to be work if he put it everyday like a regular chapstick? or just hen he feels a cold sore comming