help please... URGENT!!! love advice......

I've had this thing with this guy, let's call him Aaron, aaron and I have been a thing for around 4 months. I really like him and have spoken to him about being together but he brushed it off and I never brought it up again. We've never been official and I've always been the one who wanted to push it, but haven't. He's made it pretty clear he isn't interested in something exclusive, but he still expects us both not to get with other people? He hasn't been getting with anyone but me ever since he's met me. He's also 20 and I'm 16 and this has been going on since I was 15 too. ANYWAYS! I was at a party with him and it was at his best friends house, I'll call him Jacob - who's always had a thing for me and has always been open about it. I was really intoxicated Aaron saw me that night and knew how intoxicated I was. When he left I stayed at the party and Jacob and I ended up getting together. He told me he wasn't going to tell Aaron but I really couldn't keep it from him so last night I told him what happened!! And he completely flipped out on me!! And I told him before Jacob even said anything. He told me to never talk to him again and blocked my number and he unfriended me on facebook too... I don't know what to do!! I'm worried if I wait too long to message him again it'll seem as if I don't care but I'm worried if I message him on another platform he will just push me further away!! My friend called him last night bc I was so upset and he told her he was going to message me bc he needed to cool down but he hasn't... and told her he still cares and apparently loves me still yet I haven't heard from him...