Would not recommend this. Only bad things can happen. Yes. sex is an important aspect of marriage, but not the major part to be sure. Have you gone to couseling? I would recommend a good, highly-respected Christian counselor, even if you are not a Jesus follower. He or she will not be quick to jump on the "separation/divorce bandwagon". There are many love languages. The couselor can help you identify your strengths and weaknesses. This could help to not only save your marriage, but, also, help each of you come to a better understanding of yourself.