Can a virus that causes fever blisters in one person be the same virus that caused my mouthful of terrible canker sores?

Against my better judgement, I have been kissing a woman with a fever blister—she gets these from time to time, especially under stress. Well, I broke out with a fever and chills but the effects were relatively mild. Until the canker sores began—and my mouth is now like a disease from a 3rd world country with terrible white bumps and canker sores.

My doctor said it was viral and I was put on an antiviral medication plus hydrocodone.

The woman with the fever blister developed only the fever blister and claimed to have mild throat ulcers.

My question is, is the fever blister virus a likely culprit for my canker sores? As a diabetic, should I avoid kissing people with viral infections? (no, I don’t do much kissing)— I’m under a doctor’s care but this really got severe very quickly.