they dont have to show they can be inside of you so it is possible
That I don't know if they can be dormit for that long. Keep looking for other people to answer, others have more info then I do.
i got with him right after they hooked up. and we have been together ever since. i have never seen them on him before until now. so its possible he was infected with the virus 5 1/2 years ago. and just now is just now having an outbreak?
From what I read is that it can take weeks ro months for them to appear. And just because they showed once doesn't mean they will show again. It is possible that he had them after he was with the other woman and never had them show up again till now.
If he has had them for years it doesn't mean he will pass them on. My wife has had them since before I met her and she had 1 outbreak (before I met her) has not had one since and I do not have them.
So there is a decent chance that he did not cheat on you.