welcome to the board! I'm glad you found a resource for accurate info
the rates of infection with hsv2 are the same in canada as they are in the US. 1 out of 4-5 adults has hsv2. It's very common. Getting tested for herpes in canada is often trying but you really should seek out a type specific herpes igg blood test for yourself to see what your own status is. Over 90% of folks who have hsv2 have no idea they are infected until they are tested. Condoms are not 100% protection so even if you don't think you've ever had symptoms yourself, assume nothing and get a baseline status on yourself too. You will probably have to pay out of pocket for your testing.
talk to your partner about what testing she's had too. odds are 15 years ago it was just assumed she had hsv2 genitally. find out if she's pursued any additional testing to confirm her status. also ask how she treats her herpes too.
If you and your partner did nothing but avoid sex anytime she has anything going on genitally, you are 96% likely each year NOT to contract hsv2 from her ( I"m assuming you are male, correct me if I"m wrong ). If she takes daily suppressive therapy, your risk is cut in half. throw in condom use along with all of that and you are 99% likely each year NOT to contract hsv2 from her. That's not per sex act, that's per year of having regular sex with her. That's the same risk as her becoming pregnant while using the bc pill ideally.
can you be with someone for a lifetime without contracting their hsv2? yes of course you can! odds are always that you won't get it from her in general.
keep asking questions!