Break~up *not Takin It 2 Easy*

Hey everyone! On tuesday I finally broke down & broke up with my bf of 8 months, it was hard. I finally realized I deserved better cause he had been yellin, callin me names, then apologizing for the longest time..It was getting old. I was like hey this isn't even love anymore. Well I got with someone else, he's 20..I care about him a lot, we've been friends for about a year or more now. He treats me great, i've seen how he's treated his past girlfriends, like princesses. That's how he's been treating me for the past 4 days. I love it, but my ex, is taking our break up soo hard..I still love him & always will cause we went through a lot of things together. He asks me out every day & crys to me about how much he loves me, how he realized he messed up & how he gonna make it up to me. Well, next sat. Is my b-day & homecoming..I'm still going to homecoming with my ex *long story* so that means i'll be spending my b-day with him..It's going to be soooo hard. Last night he called me & my bf was here & he was tellin me that he was going to get all these gangs after my bf to kill him & he was gonna do this to him, and he was ripping my head off about how stupid I was & then his best friend gets on there & starts yellin at me, then hangs up. Well I talk to him again at like 3 after my bf leaves & he was trying to be all sweet saying he wasn't going to do anything & that he loves me...I can't stand it. I love my ex, trust me, I will until the day I die. But what should I do? Should I stay with the guy now, or go back?? Deep down inside I do miss him..But i'm not going to put up with him yellin & threatin my bf