If someone is in a monogamous relationship and wasn't tested for STDs for some years in that relationship but tested before it with Negative for STDs, then married and results are again negative, not to mention zero symptoms from previous relationship and now married relationship is it a safe
nope. HSV2 is often not included in standard std tests. it infects 20-25% of the general population. as many at 90% of those with HSV2 are unaware of it. you can ask the doctor to do a type specific test.
If you are continually testing negative for std's then it's not likely you have any of the ones you were tested for. It's important to find out just what std's exactly you were tested for though since they don't test for them all routinely.