My Boyfriend of almost three years now says that he wants to be in a poly relationship and he gets really sad about not being about to embrace that due to me not wanting to try it. we are great together and have the same interests. and hang out often when we can i work full time. Well he is the best boyfriend could have asked for and i want to try and get through this and try for him. I know he would try to continue being mono for me but i do want to try. I am very insecure and i feel like this other person will be btter then me and he will leave me in the end. He tells me all the time that it is not like that and that he loves me a lot and doesn't want to hurt me and we talk about this often. I am also dealing with the fact i just found out that i have pcos and i might not be able to have kids which we have talked about having. I feel weird that someone else would get to do that with him and i will not and i just want to know what to do to understand this lifestyle better. As well as trying it myself as well. He would like me to date others as well as him to add to our family. Please Help me thank you.