I don't have to worry about relocating if he requests a separation since the house we live in was purchased by my parents and left to me when they passed away and althought I was already married in my state inherited valuables do not become marital assets.
Not necessarily true. Some states have taken a modified approach to this problem and called the inherited assets which were shared in the marriage "gifts to the marriage." There are other terms like "co-mingling of assets." You need to be honest with your BH and you need to tell the OM's BW. And you AND your husband AND the OM's BW need to be tested for STDs because you just can't be sure you were the only one. There are members on this site who have contracted HIV from their partners. Your husband has a right to know that his health might be at stake. Please do the right thing. It won't be easy, it won't be fun. There are people here who will help you walk through this mess. Good luck to you.