So I led someone on unintentially and now I feel really bad about it? :/?

So I asked a question a few days ago saying about this guy liking me but he was two years younger than me so I told him I wasn't ready for a relationship which I wasnt. Last night when I was walking my dog on the field this guy text me and was like 'Hey, wanna meet up and just hang out for abit? xx' I was like 'Yeah sure?' So we met up and just sat down for abit. I had had a really bad day anyway due to the fact my ex is gonna make the biggest mistake of his life by getting back with his ex girlfriend that cheated on him, twice. Anyway without realizing I started crying infront of him and he was like 'What's up? You can tell me anything you know' And I was like 'But what I say to you might hurt you and I'm sick of hurting people all the time' And he was like 'Whatever you say to me wont hurt me one bit, I just want you to be happy and I want to try and make you happy but I cant do that because you wont let me try..' And he kissed me and without thinking I kissed him back then regretted it afterwards and he then told me he loved me.. And I was like 'Look, the reason I said I'm not ready for a relationship is because I can't be with somebody who I have no feelings for whatsoever and someone who is younger than me.. You can find someone better that would treat you right, I didn't mean to make you think that I liked you when I didn't :/ I just wanted us to be friends because I am still in love with my ex and I can't help my feelings :/' And this guy was like 'I understand, I just want what's best for you, I don't like seeing you get hurt and whatever happens I'm always gonna be here for you and be friends with you.. I started liking you because of how nice you was too me and not many girls are like that to me tbh.. Also your personality is amazing.. But I understand that you don't wanna be with me.' After this he walked me home, hugged me and tried to kiss me again yet I stopped him.. I just feel really bad for leading him on when I didn't even mean too :/.. How can I overcome this feeling of feeling bad about what happened and just move on??