Would two people with Herpes stay together just for the sex?

disclaimer I do not have Herpes, am not dating anyone with Herpes, there is no perspective partner in my life that has Herpes, this question was generated from conversation on another thread, and only that.

If tow people who knew each had Herpes and entered into a relationship, but over time all but the sex deteriorated in the relationship, for the sake of the sex, (which we will say was better than average), would the couple stay together? Would they feel taking the chance of being alone for a long time or not finding another partner with Herpes that was as good sexually as what they have now, worth it as oppose to being unhappy and/or fighting with the person they are in a relationship now? If they left but could not find another relationship would they regret it or return to the person they broke up with and try to rekindle the flame?