3-year anniversary, she told me “I find I really haven’t ever loved

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What is love? I was confused about this mysterious matter when she told me “I find I really haven’t ever fell in loved with you” at our 3-year anniversary.
　　3 year ago, we came together by chance. Everything seemed to be doomed. After a failed single love sick in college, she came into my sight like God bestowed. In the beginning, I thought the love for her was some kind of transfer for failed affair. Gradually, my mind changed unknowingly. Her smartness, beauty, naughtiness, unsophisticatedness & cuteness make me sick. Like a cureless patient, I crazily fell in love. On the contrary, when sweet words came to her, she always said “I believe love could grow with time.” Although that’s not heard perfectly, I didn’t care about I was sure she would love me some day. Even when she told me she wasn’t a virgin any more, I just put that aside as I thought I should take responsibilities to cherish such a good girl.
　　In next 3 years, what lovers could do, we all had done. I always keep my promise. But every time I mention related matters about marriage and future, she always tells me she isn’t hurried for marriage. If love exists, why not marry?
　　About 7 -month ago, she started refusing my intimateness and told me she didn’t like that any more. Sometimes she mentioned she was a sexless girl. On that condition, I didn’t force her to do what she didn’t like as I thought love should be skin deep.
　　But, things are changing though I don’t know why. At 3-year anniversary, we came back late. We enjoyed ourselves very much. However, about 1:00 AM, when we would go to sleep, she mobile rang and messages came. I joked her “Is that from your lover?” She joked back “Yes.” I felt uncomfortable at that moment, so I half jokily and half seriously asked” Is that true?” “Yes” this time, her voice was fixed with joke. Time stopped, air froze at that moment for me.
　　After my repeated questioning, she finally said “I don’t want to cheat you. I have fallen in love with another man.” “Why?” Blood filled full in my eyes, fire burned fiercely in my chest. She told me “I find I really haven’t ever loved you. I like play with you, but you aren’t that kind of man I love in mind. Could you bear that I love you two from spirits?” I felt dizzy and very terrible. “Have you made anything immoral?” I pressed my anger as it might explode any time unreasonably. “No, just spirit love. I’m really fed up with sex, I want love without sex. Could you accept that?” I said nothing.
　　The second morning, I thought I could accept she wants love without sex, but I couldn’t accept “I find I really haven’t ever loved you”. Finally, I told her “I could promise that I wouldn’t force you to do what you don’t want to do. But would you love me and live with me in mind? ” She hesitated and said in cry”I don’t think I really love you. If I really love you, I wouldn’t want anything from you, meanwhile I would like to sacrifice myself for you and do anything for you. Could you offer me 2 years? You can go to find a person who loves you or you love, but we promise we don’t have sex relationship with anyone. “
　　I confused again. I really don’t what I should say. Answer her” Yes” or “No”?
　　If you are patient enough to finish reading it, could you leave your comments, your comments is very valuable to me. Thanks!!!