How to find out if i have HSV-1 without ever having a cold sore.?

There is no test for a cold sore. You will just have to wait and see if you get one. It would be prudent to not kiss your girlfriend when she is having an outbreak if you don't want to pick up this virus. For more information on cold sores, you can go to WebMd.com and type in cold sore and read up on this condtion.