This could be from friction it does happen.
You and your boyfriend go through and be tested with a type speicifc igg test. This will help you both know who has what.
first, herpes does not necessarily appears in groups/clusters. So you`re probably getting medical assistance from someone who is not up to date with herpes, really. At the same time, herpes would not only appear after a run/walk.
I guess the best approach here would be for u and your partner to get type specific blood tests, since u two have no symptoms right now. Ask for herpes I and I Igg blood test - IgM tests are useless.
and if any of you have symptoms again, be seen and request a swab.