Me and my boyfriend are both 16 and we have been dating for nearly a year.

Recently I thought he was cheating on me because he was liking photos of this cheerleader who goes to our school and he's a varsity football player. I confronted him about it and he told me that I need to calm down and I told him not to patronize me and I blocked him. We still sit by each other in class and he went to the restroom & left his phone. I know his password so I unlocked it and his most recent message was to his friend calling me immature. When he came back he asked me if he could drive me home after school and I said yes. During the ride he asked for my opinion on liking photos of other girls and I gave him my honest opinion. Then he told me that I can set some boundaries about it if they're within reason and I thanked him. I do have a jealousy issue and I'm so surprised over how understanding he was but I'm so angry that he called me immature. I mean the both of us are 16 so obviously I'm gonna be "immature" but if he wants to throw that word around then he's much more immature for talking about me.