As we don't yet know if a romantic relationship between Conrad and Pepper will actually happen, I think it's wise not to rush into it. If something does develop, I'd suggest going for it. The interest of his children seems paramount, and even if the secret is kept, eventually their power will perhaps grow as they grow up. That could possibly out them as being suspicious. But if no one is looking their way, the rest of the community would more likely see what they want to see (their goddess "untarnished" by scandal). I think Pepper could help provide that protection as well as love and support for the kids. But if the relationship doesn't happen, or if it does and seems too shallow to survive the long haul, I think it would be unfair to drag Pepper into it. Conrad may have to bear the consequences of his actions, even if it means sacrificing himself for the sake of his children.