He BROKE UP with me yet he STILL FLIRTS with me?!!!

My ex boyfriend broke up with me about 2 days ago because he said he was losing feelings only because I wasn't improving myself to the point where it would make us both happy in the relationship. At first it was hard for me to accept it, I tried to get him back 2 times already only because I felt like there was still hope but his mind was set and refused to take me back. HOWEVER, on the 2nd day of us talking about our break up and after all the explanations- he started to FLIRT with me again? Like he would tease me, take my stuff and run away with it and when I would try to get it back he would either huge/hold me tightly from behind and put his chin on my shoulder or hold my hand for a while till he realized what he was doing. Later he took me home, I never asked him to call or anything and I didn't give him a hug when I left- just a casual bye and went in my house. LATER that night at around 7:30 he calls me sounding nervous/anxious and ask these questions: how are you, what are you doing, how do you feel, are you doing anything tomorrow after school, were you able to sleep last night (the day when he broke up w/me), did you talk to anyone on the phone and if you did WHO was it?. I DON'T GET IT! Why does he care?! He even stayed longer and told his mom to wait cause he was on the phone. WHY DID HE DO THAT? But I had to go so I left and just said we'll talk later. I didn't call but I missed his at 10:30 pm. I didn't call back that night or the next day but HE called me asking what I was doing after school- AGAIN. I told him that I didn't have a ride but I didn't need him to give me one. He kept offering and then he finally said "this would sound stupid but I need to talk to you in person, can I do it now? Can I come now please? ". I was curious so I said yeah. He came right away and after a couple minutes HE FLIRTS WITH ME AGAIN. Teases me and started to find excuses where he could hold me in his arms he would at times come real close to me like he was about to kiss me?! WHY?! He ended up dropping me off at my house 2 hours later. But when we were in front of my house, he didn't stop but kept going around the block like about 5 times for some reason. I told him that he was going to be late for his wrestling practice but he said it was fine. 15 more mins. Wouldn't hurt. But he FINALLY dropped me off & I did the same thing. Said bye and left without looking at him. And then he DRIVES BACK TO MY HOUSE and finally said that he needed to talk to me. He said that it was REALLY hard for him to deal w/the break up even if he thought it was gonna be easy. He felt like I needed to know so that's why he told. He even said that he doesn't want to flirt with other girls or wasn't even sure if he would go clubbing with his friends when they asked him because it felt "wrong". He says he WANTS TO GET OVER ME because he thinks I won't change but a part of him doesn't want to but he doesn't know why. He won't take me back though. He wants to be "good friends" still. I AM SO CONFUSE