Her fear of men made him think that he was not in her heart; his one month of cold violence made her think that he did not love her..
Neither he nor she wanted to ask each other what they really thought. They were both afraid that what they really thought was the answer they were most afraid of..
Thus, they gradually drifted apart.
Yes, four years ago, did he love her? Yes, perhaps he had loved her a long time ago. Otherwise, he would not have gone to her without hesitation when he saw the fire at the hot spring resort that year.
Did she love him four years ago? She did love him, but that nightmare made her not have enough courage..
At that time, he and she both loved each other, but their love at that time was childish and weak.