I dont know any other way except being a wife and homemaker and mom.
Hi Rue,
If you can't see yourself as anything apart from the roles you play in your family, it seems to me you may have lost your identity in your marriage. Recovering a strong sense of your individual identity may be a good place for you to start your soul searching. It may also help you take your focus off your H and OW and bring you some relief.
I have seen that sometimes men can feel overwhelmed and burdened by the responsibility of caring for a highly dependent partner. I suggest you use this time apart from your husband to find your true identity. Think of this time as an opportunity to rediscover yourself and you may find that when the bloom fades on his relationship with the OW, as it is likely to, he may find himself attracted to the new 'old' you all over again.