The thing about being in a cold marriage is to stop thinking and move towards redefining your own life. Getting dependent on the life partner to provide you everything, when they may be busy in their own life, can mean that they no longer feel attracted towards you. Let's see the things that will make your both attractive to your partner and give you a new perspective about life. Hit the gym, become attractive for yourself. Join a hobby class, painting, music, book reading and so on. All of these connect you with new people. You get to discuss both the interests and the personal life. Remember, if your partner is having an affair, then there is nothing much that you can do right now. If you are ok, with your husband, leaving the other woman and settling once again, then you can consider the above options. Another way of taking things, is to start spending time beyond the household and get involved yourself. This could eventually lead to divorce, is something you have to take into consideration.