Jealous of best friend spending time with my boyfriend

hey girls, I need some advice. I feel like I'm going crazy for no reason. so my boyfriend and I recently broke up and started over after having a 6 month long relationship that was very very serious. outside events caused us to get into a big fight and he was debating on leaving me for good but I convinced him not to. so now we still sleep in the same bed and flirt and have had sex once since our "break up" 3 weeks ago. well we also live with my best friend, and her and my boyfriend have become really good friends in the last 7 months of us all living together. they do have a stronger bond as friends and have more in common than me and my boyfriend do. the have been staying up late watching TV together and today they went to see a movie before work while i was at my doctors appointment. I can't help but feel upset and jealous that my best friend is out doing things that I can't do with him because we aren't technically "together" like we used to be. he told me I have to earn back the love he used to have for me, and that really hurt. he is the man I want to spend the rest of my life with and have kids with, but I've also had my best friend for 5 years. WHAT DO I DO? please help me