If you are infected with hsv1, it certainly did NOT come from your encounter 3 months. Without a penis going into an anus, mouth or vagina, there is no way you caught hsv1 from that encounter. You would have a much greater chance of being struck by lighting three times in one year.
If you are infected with hsv1, congratulations, you are in the majority of humans. At least 50 percent of adults by the age of 20 are infected with hsv1 and that number rises with age. Most people you date in life are going to be infected with hsv1. If you really are infected, you probably have been since early childhood and you are asymptotic, which is really quite normal.