Herpes confusion HELP!!

Hey ladies I need maybe a nurse or a doc on here ... about 5 /6 days ago my brother got pretty drunk with his boy at there apartment they finished a case and then go get a bottle and finished that his friends ex came over and they were all hanging out mind you his friends apartment he currently has with his fiancé and two kids ... why he invited and ex no clue ... but fast forward ... he thinks they messed around but he’s not 100% sure she came forward on day 4 saying she has herpes and takes medicine for it ... my brother asked her if they had sex but she told him no ... he wanted to see her for face to face confrontation and she ghosted him in his gut he feels they did something but blacked completely and don’t remember... he got tested on day 5... they called today saying both hsv1 and 2 were negative ... I’ve read everywhere that he tested to soon and needs to go back in a week or two ... am I wrong or is he in the clear ... ???