NEED ADVISE PLEASE READ

My best friend, of four years, and I decided to start dating about two months ago. Prior to the "talking" phase of our relationship we discussed everything in our love life's and didn't ever leave anything out. During the talking phase, I messed up tremendously and  told him about how attractive I found this guy from my church (should be noted the guy I was talking about was much older and there was no relationship at all between us). Also, during the talking phase was prom. I went with a friend (whom I previously had a crush on) My boyfriend knew who he was and that we were just friends. In fact the entire day of prom I spent my time snapchatting Jake (BF) and after prom on my way home I called him and we talked for hours. When I got the prom pictures I excitedly shared them with Jake thinking he'd notice how dolled up I was and like me even more. Instead the focus was on that I had a date that wasn't him. These two things led to a lot of crying and apologies. I have done everything in my power to let him know that I am genuinely sorry.