Please can only muslims answer this?

I need real help here and I have 2 children from before all this was accepted.I married my Muslim husband 3 years ago soon after I converted to Muslim faith it was my choice. But before we married I told my husband I could not have children and I could not accept him marrying another so he had the choice of walking away from me. He said he accepted all what I said and did not want another so I belive we had an invisible contract between me my husband and Allah. Now 3 years on he has decided he wants a younger wife and children and im torn appart. I came home from work and he quoted this part of quran to me oh prophet why do you deprive your self that which Allah has permitted to you seeking to please your wives Allah is most merciful. He wanted me to add this bit too. Allah has already ordained for you oh men that the dissolution of your oaths. So did I get tricked into marriage and have to leave him because I cannot accept another or is my husband deluded please help me my brothers and sisters.