unfortunately married a sexless woman

Marriage turns to be fall apart, I love her no doubt,I feel lucky to meet such right woman,till we married.I notice she don't touch me at all. Later,she confess she is sexless,but she need a husband and she loves me.I can not recognize it is fake or not. She told me if I need, she will buy me a xosexdoll. Gosh, I totally have no idea how to do with our marriage.Should I divorce her?