From your description it doesn't sound like it. Generally herpes is a Small red bumps which appear first, develops into small blister, and then become itchy, painful sores that might develop a crust.
You may have an infected follicle/cyst which is common. I would apply a warm compress to the area which will promote for it to burst. Don't try to squeeze this, as that can cause further infection. Keep an eye on your boyfriends sore just to make sure it's not the same description as stated above. If by doing the warm compress doesn't help, then to be on the safe side, do see your doctor. As if this is a cyst, it may need to be drained. At this point, it doesn't appear to be STD related.
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