why is it so hard for people to tell the truth when it comes to feelings?

i’m honestly just so upset right now. for the past 2 years i let myself get my hopes up. a guy started talking to me and he came on strong always complimenting me, saying all these things we could do together, etc. i’m really shy so i kinda brushed off the first time when he asked me when he could take me out. we never got the chance to meet because eventually he told me he wasn’t looking for a relationship. when he told me this i said i would leave him alone because i didn’t realize he didn’t feel the same as me. but he kept talking to me. there were a couple times after that i tried to say bye cause it was hurting me. there were also times we actually stopped talking but then he’d come back. i tried to meet him multiple times. i also told him that he can just tell me the truth. if he didn’t like me etc. whatever it was. he knew it was hurting me. but he told me that he did like me, it wasn’t me, he was healing, etc. eventually he started telling me he liked being alone, relationships were a prison, etc. then he ghosted me and within a couple weeks was fully committed to someone else.

why couldn’t he just be honest and leave me alone? i know it’s also my fault for staying but why lie to someone? then he would say he didn’t want to hurt me and at the end he said he didn’t want to lead me on like genuinely what did you think you were doing for the past 2 years??? why didn’t you just leave me alone, i was never rejecting him. i just said if you don’t feel the same i’ll leave you alone but it seems he took that as an attack because apparently i was being dramatic and petty after being confused why he kept talking to me after i said i’d leave him alone. idk why i always give in and give so many chances to people who never cared about me.