Can headaches (and only headaches) be a sign of herpes?

I got herpes after having a one night stand with a guy, two days later I felt an itch on the anus area but I thought I had microtears since I had anal sex without lube. One week later I got together with a friend with benefits I had, we had had unprotected sex before but this time I insisted on using a condom, still, we touched each other a lot and didn't wash our hands right away. The next morning I began having pain and a couple of days later I found I had a couple of sores, now I know I was on the stage prior to an OB when I had sex with my friend. I wrote to him asking how he had been, fearing he would tell me he had an OB, but he said he had been perfectly fine. Some days later we met in person and he mentioned that he had been having terrible headaches. That night I told him I contracted herpes, he was very supportive and told me not to worry because he didn't have any genital symptoms or any other kind of symptoms other than the headaches. Still, I'm worried I spread the virus to him, but he has to wait 3 months to get a blood test, so I ask here to have a better notion of about this. Did anyone here experienced only headaches before being diagnosed? Thanks in advance!