If you keep seeking euphoria in a relationship, then even swarga-loka can do nothing for you! We need to understand that no one is perfect. Our relationships keeps changing through time. Change is the law. It happens. But if you seek euphoria out of this phenomenal process, then good luck! Finite world cannot give you euphoria you looking for. You need to renounce this world, and live like a Sannyasi. Can you do that? If not, stop seeking euphoria from any objects or people from this world. Be content of what you have. Life is one big experiment we perform with ourselves trying to find a permanent satisfaction. However, water seen in the mirage cannot quench our thirst! Similar is the fate of all living being trying to find happiness in this world. They all succumb to death without knowing that the world in which they live is a fantastic long dream. Whatever you are experiencing right now is your own mind. Your wife is absolutely not responsible for how you feel! You experience your own thoughts. If you think you are not experiencing euphoria you seeking for, than you experience such emotions because of your own thoughts and desires. However, if you think divorce is a solution, go ahead and do it. It's merely an another experiment! There is no limit to experiments in our lives. Be content and experience the supreme bliss!