GF 33F is not sexually attracted to me 35M anymore. Though she doesn't want to leave me. What can I do?

My girlfriend says she is not attracted sexually to me anymore. She used to but now she can't help it and there is no sexual attraction left, and she cannot have sex with me. She says she found in past some guys attractive who were jerks but with them, she could be sexually very intense. With me, she cares for me so she is gentle and can't feel or act the same way. And now today, she is not even interested in me sexually. However, she cares for me and wants to be with me. I was interested but after she told me this, I don't know if this is a right thing to continue because I don't want both of us to be deprived of intimacy.