How can I get him to see I have changed?

Well there is this guy I’ve like for like over a year now. We used to text each other stuff. e.g. oh baby I wish you were licking my pussy/sucking my d*. It stopped for a while because we didn’t text for a while. Then about 6 months later it started happening again. I tried not to do any of that with him anymore but then it would just get to me and I would give in. Then it got to where he couldn’t text for a while, or so he says…I found out recently that he can text. But not from him. I heard from one of my friends who one of her friends texts him all the time. I do want to do that to happen sometimes again but I think I can have more self control this time. Its just, he can’t have a conversation with me anymore in person without having sort of an attitude while talking to me. Well I think he lied to me about texting is because he knew what we were doing was wrong, but he couldn’t help himself. But maybe if I have more self control, maybe he will too. I asked him out 2 times. I asked him why he wouldn’t go out with me one time (which I had said that I was already over him, just trying to find out why, which I was lying) and he said because he was afraid we would do something that we both would really regret. But anyways, how can I make him see that I have changed?