To what extent are you willing to pray and even fast for restoration? I'm sure you are praying now but you may need to get very serious and approach this from a spiritual warfare point of view. This is prayer that is intense, targeted, Spirit led, tenacious and bold. Adding fasting to your prayer also gives it a power boost. Are you willing to place this marriage under honest scrutiny and submit it to God? That means; can you examine the roots of the marriage, both good and bad, and be prepared to make any changes necessary on your end? By that I do not mean your husband had any justification for leaving and committing adultery. He did not. I am also sure that he has found a way to justify himself. However, if he returns, how can this marriage be built on more solid ground and what can you do to contribute to that? The time you wait can be very productive for you both spiritually and emotionally. As you pray and trust God your relationship with him will deepen and you will be more sensitive to God's voice in giving you direction for your future. Protect your emotions by not speculating OR daydreaming. Do not let bitterness take root. Practice forgiveness without feeling like a doormat. Grow and bloom into a beautiful flower fragrant to the Lord and to those around you. Know this: "If God is for us, who can be against us?" (Romans 8:31) God is for you and he will work this for good in your life. Trust him!