so I've been with guy a since January but we split for a month in march when I was with guy b. I got back with guy a soon after and have been with him since. I have never showed any symptoms of herpes ever. Three days after having sex with guy a I began to show symptoms and went to the doctors and was diagnosed with genital herpes. guy a had all the girls he had been with recently tested and they all came back negative, he is getting tested next week. is it possible to have gotten it from guy b months ago and the symptoms are just arising? or is it definitely guy a?