I yelled at him and now he is ignoring me

I was hanging out with this guy I’ve been dating since Valentine’s day. We are not official, but I’m enjoying our relationship as it is (: I decided to wear these nice boots that day, however they always make my feet stink! When I was at his place he made me take them off and wash my feet. Later he decides we should go downtown, but he tells me I should change my shoes and meet him at a certain place. So I did and head that way, he calls, but struggles to find me so he says “I’ll just ride the bus instead” then he just hangs up! I call him tons, and he doesn’t respond (and I know this is needy behavior but I was just reacting on instinct) I started to cry literally after he hung up. So I texted this: “*****, I do not appreciate this. This is unacceptable. I’m by Jack in the box. I don’t appreciate that you would want to meet and leave me. I was 5 steps away from the street. I am not happy with you and I want my stuff.” I left my backpack at his place cause I knew we’d come back there together. He tells me he’s leaving already. So when I call and he picks up… I yelled at him of how unacceptable it was to leave me, but he just kept responding with “okay.” I’ve never yelled at him before because he’s never frustrated me like this, he even told me to stop yelling. I wasn’t able to keep my cool because we were supposed to hang at that moment. He hangs up on me cause I wouldn’t stop yelling. So finally I decide to text him “Let me know when you’re here or at least heading back so I can go there.” He came back instantly, and he responded 10 minutes later with “come get your shit”. So I walk over to his place, he hands me the backpack and tries to close the door, but I stop it and walk in, ask to talk, but then he says no and runs to his room and locks the door. I tried to plead, beg (I know, I know, I gave him all the power right there) but he ignored me so I left a short letter that read, “I’m sorry for yelling at you, but I don’t appreciate that you left me when we planned to hang out, I’m disappointed in you and I thought you had my back. How could I trust you again? Good day to you” I slid it under his door and left. Two hours later I decided to text this: I feel guilty about yelling at you, I’m really sorry. I was really mad that you left me, can we just move on if you don’t want to talk about it, I’d like to talk about it. I like it when we do, it means a lot when you reach out to me about these things.”
This all happened yesterday and he did not respond at all. I’m not going to reach out to him anymore about it. I figured he’s just freaked out over my yelling and is in withdrawal mode. But I want to make the best decisions so I don’t make him disappear completely. He’s not my boyfriend, but I do want a relationship. Now I know because this happened, I can’t exactly see where we’re going or “inspire” him to want to be with me.
What to do now since he’s withdrawing? Do I just fulfill my life till he reaches out to me? I figured I should just move on till something happens. I was hanging out with this guy I’ve been dating since Valentine’s day. We are not official, but I’m enjoying our relationship as it is (: I decided to wear these nice boots that day, however they always make my feet stink! When I was at his place he made me take them off and wash my feet. Later he decides we should go downtown, but he tells me I should change my shoes and meet him at a certain place. So I did and head that way, he calls, but struggles to find me so he says “I’ll just ride the bus instead” then he just hangs up! I call him tons, and he doesn’t respond (and I know this is needy behavior but I was just reacting on instinct) I started to cry literally after he hung up. So I texted this: “*****, I do not appreciate this. This is unacceptable. I’m by Jack in the box. I don’t appreciate that you would want to meet and leave me. I was 5 steps away from the street. I am not happy with you and I want my stuff.” I left my backpack at his place cause I knew we’d come back there together. He tells me he’s leaving already. So when I call and he picks up… I yelled at him of how unacceptable it was to leave me, but he just kept responding with “okay.” I’ve never yelled at him before because he’s never frustrated me like this, he even told me to stop yelling. I wasn’t able to keep my cool because we were supposed to hang at that moment. He hangs up on me cause I wouldn’t stop yelling. So finally I decide to text him “Let me know when you’re here or at least heading back so I can go there.” He came back instantly, and he responded 10 minutes later with “come get your shit”. So I walk over to his place, he hands me the backpack and tries to close the door, but I stop it and walk in, ask to talk, but then he says no and runs to his room and locks the door. I tried to plead, beg (I know, I know, I gave him all the power right there) but he ignored me so I left a short letter that read, “I’m sorry for yelling at you, but I don’t appreciate that you left me when we planned to hang out, I’m disappointed in you and I thought you had my back. How could I trust you again? Good day to you” I slid it under his door and left. Two hours later I decided to text this: I feel guilty about yelling at you, I’m really sorry. I was really mad that you left me, can we just move on if you don’t want to talk about it, I’d like to talk about it. I like it when we do, it means a lot when you reach out to me about these things.”
This all happened yesterday and he did not respond at all. I’m not going to reach out to him anymore about it. I figured he’s just freaked out over my yelling and is in withdrawal mode. But I want to make the best decisions so I don’t make him disappear completely. He’s not my boyfriend, but I do want a relationship. Now I know because this happened, I can’t exactly see where we’re going or “inspire” him to want to be with me.
What to do now since he’s withdrawing? Do I just fulfill my life till he reaches out to me? I figured I should just move on till something happens.