"My Husband is attracted to our adopted daughter" What should i do?

My husband told me that he's attracted to our adopted daughter and would want to marry her so that another man won't have her. 

Storytime. I couldn't believe my ears that morning when my husband told me his story for what he wants to say. But he has to tell me the truth no matter what. I thought of what he wanted to say, but I could come up with nothing. So let me just listen to him. 

We adopted this girl when she was five years old. Yes, I can't deny the fact that she is going to be a very beautiful lady, curves well-created and all that. She's now 24 years old. 

My husband said "I've invested a lot in this girl. I can't watch her go to another man. Please understand me," my husband said. At that point, I saw his serious look. I stood up. I wanted to slap him, but I didn't. I just helped myself and walked out on him. 

I went to my daughter's room and I saw her crying. Nelly, why are you crying? She refused saying at first. Immediately, I shouted at her. I raised my voice to the extent my neighbors could hear me. Tell me what is going on here. At that moment, my mind became restless. What is happening? I asked her again. Mommy, I am pregnant for daddy, and we have tried removing it, but it is not working, my daughter said. Oh my goodness, what's going on? Wait, wait, did he force himself on you? Tell me what led to this. I want to know. Immediately, I texted my brother to come over to the house. Then I resumed asking her, Nelly, what happened? 

Immediately I felt this hit on my head. I fell down. When I opened my eyes, I saw myself in the hospital. What saved me was the text message I gave my brother. According to my brother, when he arrived with his friends, they saw my husband and my daughter dragging me to the toilet without knowing that the door was open. Immediately they rushed my husband and my brother brought me to the hospital. My husband and my daughter were arrested. According to their confession, the daughter we adopted was my husband's ex-girlfriend's daughter. So he brought her for us to nurture her so he can continue what he had with her mom before she died.

He was the one who went for the adoption because I was in tears that day asking God why I can't conceive. I can't believe what happened to me. I'm still thinking it is a movie but this actually happened to me. I'm thankful that I'm alive to tell this story. My husband did me dirty. How do I move on from this? 

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