I’m so confused

Me and my boyfriend have been together for almost 4 years. We have been having issues lately. We haven’t been intimate for 3 months. And before that 6 months. I don’t feel the connection we used to have when we first met. I feel like we don’t want the same things from this relationship. I will like to start a family one day but I don’t think he wants the same as me. As of right now we sleep in different rooms. We’re living like roommates. I don’t know what to do. Should I fight for this relationship or should we go our separate ways?? I go back and forth constantly ☹️