Know There are No Quick Fixes

Your partner isn't likely to forgive you overnight. It will take months or even years to move beyond the pain and betrayal of an affair. If you are both committed to holding out for the duration then you can make it work. If you expect things to be better or all to be forgiven overnight then you aren't exactly being realistic in your expectations and that could doom you both to disaster. Be ready to work for a long time to repair the broken aspect of your relationship.

Spend Time Together

Learn to enjoy being together all over again. This accomplishes more things than are obvious at first glance. By spending time together you are getting to know each other and working together. More importantly, your partner knows where you are and who you are with. He or she isn't sitting at home wondering what's going on. Even better than this though is the fact that you are building new trust and finding new common interests as you spend more and more time together.

This may very well be the best way of how to fix a marriage after an affair.

Make Small Gestures

Believe it or not, it's the small gestures that often have the biggest impact. Slip a love note in his or her coat pocket. Write a silly but romantic email. Post a post-it-note to the bathroom mirror proclaiming your love. These little things generate renewed affection and build a stronger relationship. They do not overwhelm like expensive gifts of jewelry or come across as insincere like flowers often do.