Guilty or not

So well, 2 years back, there was this guy who liked me. I was not in a proper frame of mind to want a relationship and I clearly told him that too .But, he took it pretty hard and told his parents and friends . They thought "I deceived him".To top it all, he stopped speaking from his side completely for like a year . Now recently, when we started speaking, he was still interested in me. I had accepted it this time. But then, his mom had called me up saying that back then, I had deceived him and what I had done was not right. I don't get it. How was rejecting him "deceiving him "?I still have this question every day as I try my best to live my life doing good to people . Would not dream to hurt someone that way. Idk whether rejecting him was a bad idea. Had I not rejected him, his parents wouldn't have had such a bad impression of me .I really hope one day he realised what happened to me was wrong .