Husband diagnosed

Husband tested positive for HSV2 on his lip. I’m so confused. The lesion on his lip also tested positive for staph. The Dr said he can get re tested but the fact that it’s HSV2 doesn’t really mean much ..that the numbers don’t mean a thing..And that he really can’t tell him much. He was physical with someone during our “break” ...so doesn’t this mean he contracted it from her? He never had an outbreak of any sort in our 10 years together. 2 days after dealing with this woman .. the sore appeared.

The dr kept saying he can’t really say. Doesn’t this mean he may have Genital herpes as well(dr said no since he hasn’t had an outbreak) Idk I’m so Unknowledgeable about this all.can someone help me

Understand. I’m about 2 seconds away from packing my shit. I don’t think I can deal with this. I love him but this is just way too much for me

ETA: he had a herpes test 3 months ago and it was negative. Now it’s positive.

He’s also NEVER had any outbreaks on his lips until after meeting the girl.

So I’m trying to figure this out as best as I can.

Pls just help me understand.