Marriage is a symbolic union between a man and woman that reflects the relationship between Jesus and the church. It is a ministry. God made man and women differently as to reflect different aspects of His character. When they become man and wife, it is the closest thing on earth for us to see how Jesus is the head of the church and how the church responds to Him. Not everyone is meant to be married. Many people are called to serve God as a single man or woman. But we are suppose to love God above all else and yes He is to be enough for us. Marriage is a gift to us from God and He will give this gift to some and not to others. And yes I believe a person can "cheat" on God. We do that everyday by worshiping anything other than Him which can include worshiping our spouses and worshiping marriage itself. When our desire to marry goes before our desire to serve, obey and honor God then we making marriage an idol.
One of the biggest and most dangerous lies Satan has made us believe is that God wants us to be happy above all else. No He does not. God warns us that a christian life is one of self denial of our earthly desires, persecution, heartache and all sorts of other hurtful things. But He promises that if we stay true to Him and obey Him and follow Him, our heavenly rewards will reflect that. He also promises us JOY which is much more than Happiness. Happiness is a feeling. It comes and goes daily. Joy is lasting even in the face of pain and sorrow and loneliness. Everyone in this world is so concerned about being happy that they latch on to people and things that fill that need, but only for a time. When the happy feeling is gone they run off to find the next happy fix. Hence so much pain and heartbreak. God knows it is hard to be alone but He can be enough for you. And yes it is better to be alone and please God than to be happy in a relationship that is not blessed by God. It sucks but in the end it saves you from further heartbreak. God sees a bigger picture than we do. You either trust Him or you don't.
I believe people can change with Gods help. It may take the rest of their life but it can happen. In no way do I believe that abuse should not be ignored or tolerated. Example, my aunt and her kids were abused and she left her husband. She did not divorce him. She stayed true to her vows even though he did not. She prayed for him to change and he never did. He died a drunk and they never got back together. I am sure she was lonely, and I'm sure she thought of getting remarried before he died. But she stayed obedient to God and I believe He is greatly please that she remained loyal not only to a husband who did not deserve it, (just like God is loyal to us who do not deserve it), and will reward her in heaven and perhaps on earth. She is a great example to her now married kids who know that they will never give up on their spouses.
Not all love between human beings is good. Some of it sinful. A man who is cheating on his wife because he is in love with someone else is not a love to be embraced. There are adults who are in love with minors and have relationships with them. This is not a love to be embraced. Humans have put too much emphasis on the feeling of love. Love is much much more than butterfly feelings. These do not last. True love happens when those feelings are gone. When you stick with it even when it's hard and doesn't seem worth it. When you work through the hard times, honor your vows to your spouse and to God. And rediscover the butterfly feelings together when the bad times are over. This whole world is embracing whatever kind of love that comes up. What good has that done? Have you seen the state of the world lately? Broken marriages, relationships, motherless and fatherless children, jealously, heartbreak. There is a reason that most murders happen in the home. It is because our homes are broken because no one puts anyone before themselves and no one puts God before their desires. Everyone is too busy trying to find love and happiness that they do not see the destruction they leave behind and the repercussions it has on other peoples relationships.
I do believe that everyone has the free will to decide these things for themselves and we as christians can not decide for them and are to love them despite their decisions. We do not have to agree with them, or accept them, or support them, but we are not suppose to act out in hate towards them. People think that love and acceptance are the same thing. That if you do not support me, or agree with me then you must hate me. This is not true. It is possible to love someone and not agree with them. I am friends with people that live a lifestyle I do not agree with. But we can put our differences aside and have a friendship despite that.
Being a Christian means that you follow Jesus. We may not always understand why God does things the way He does, but we trust that it is for the best and that He is in control. Who are we to question our creator? Does a canvas have a right to demand the painter to paint a certain way? Does a song have the right to tell the composer how it should be sung? Do the stars in the heavens command God when they should shine? Who are we to tell God how we want to live when He has given us life? When I became a Christian I gave up my right to tell God what to do. I follow His word, not the other way around. It may not always be fun or feel good but it is ALWAYS good for me. It is always right. It's all about Him!
It is no longer I who lives but Christ who lives in me.
I also said I did not have all the answers. I may be wrong in some ways but I am still learning. I am sure you are too.