My thoughts on your situation:
1. That is a very low positive and without ever having symptoms, I would be a little suspicious of those results and would get the Western Blot test from the University of Washington performed as a confirmatory test.
2. Does your partner know that you might be hsv2 positive? If not, I must urge you to tell any and all future partners about your situation. It is very unfair to them to not be informed. You have an ethical and moral obligation to inform all partners.
3. Condoms are very effective at preventing the transmission of genital herpes. Not 100% effective, but for any single encounter if the condom is used properly and does not break, it is probably 90% effective. So, if you assume there is a 1 in 1,000 chance on average of transmission occurring for a given single unprotected event, then there is about a 1 in 10,000 chance of transmission occurring during a protected encounter.
Now, transmission certainly occurs with hsv2 discordant couples after repeated and numerous episodes of sex. Why? Well, obviously there is repeated exposure, but probably more important is that even when couples report using condoms, it's probably likely that they don't use them consistently and effectively.
4. Herpes is consider a skin to skin transmitted std, but it is not that simple. The virus needs to be vigorously massaged into skin, which is susceptible to transmission. Thus, most or almost all initial herpes symptoms, i.e. blisters, sores lesions, etc appear on the shaft or head of the penis and in women appear on the labia minora or the cervix.
5. The virus is very fragile once exposed outside the human body. It remains viable for only seconds. So this is why mutual masturbation, even when bodily fluids are involved, rarely if ever leads to transmission. Std clinicians will tell you that in all their years they have never seen a case of transmission resulting from mutual masturbation.
6. Congratulations on using condoms. Outside of not having sex, condoms are the single most effective way for reducing transmission of all stds. If used properly, the likely hood of catching most stds is almost zero.