Is it normal that am having sex chat with my friend(girl)( not girlfriend)

We were not too close but we'll chat regularly. Sometimes we'll do some descent sex chats. I.e not vulgar. She is Jus's my friend. Neither of us don't have any decision of Love or relationships. We are just friends. But we use to make hot chats. Usually I'll make ta most of ta hot chat. I meant 'we' because she'll ask kinda 'then..then' also one day we went to theatre for a movie and I kissed her slightly. But still both of us are clear that we are friends. I also don't want any relationship or love with her. But I like this kind of. Chats with her. But somewhere in my heart I feel guilty that this is wrong. But I can't stop this. I feel like I am betraying my future wife now. But mostly I like this. Am I right or wrong?