???should I or should I not have sex with my ex's bestfriend???

Im in the 9th grade…im sexually active but my current boyfriend took my virginity [[&&]] we have been having sex a lot [[im on birth control]]. Me [[&&]] my ex-boyfriend’s best-friend used 2 be friends until he went [[&&]] screwed it all up a couple of months ago. My ex-boyfriend is in the 11th grade [[&&]] his bestfriend is in the 10th.

[[I made up some fake names for the people in my story]]

*here’s how we started talking: Kenny, my ex-boyfriends bestfriend was in my 2nd period class. We never talked 2 each other until he found out that I was with his bestfriend, nick, at the time. One day he asked me to come sit next 2 him in class [[&&]] I did. We started talkin [[&&]] stuff. Then, 1 day we had 2 complete a survey [[&&]] write our #’s on it. He memorized mine [[&&]] that’s how he got my #. He called me every night [[&&]] I really started 2 like him. It was almost like we were 2gether. Then, we started gettin sexual in class, for example, he would take my hand sumtimes, put it in his pants [[&&]] I would take care of the rest ((if you know what I mean)). Sumtimes he fingered me, we kissed, did everything. All the while, I was feelin guilty so one day, I told him we had 2 stop, but I was already 2 deep involved. One of our late night phone conversations was about me [[&&]] him havin sex one day. I told him that I wouldnt do it in the school, but I would do it in a car. One day our school had a lil parade marchin downtown [[&&]] afterwards, we got 2 stay outside 4 the whole day ((the perfect time 2 have all the sex you could handle)). He asked his cousin ((one of my bestfriends)) if he could borrow the keys to her car so that we could ‘’go fck.” I told him “no” [[&&]] he got so mad that he wrapped his hands around my neck and started draggin me down the steps towards the car. The only that saved me from gettin raped that day was the fact that nick was out there [[&&]] a whole bunch of other witnesses.

**long story short: He wants sex from me [[&&]] he wants it now!!! At first I wanted the sex 2 but then he turned into a beast. Back then, the thing that kept me from doin it with him is guilt, but now its the whole fact that he’s really mean 2 me all the time for no reason except I wont have sex with him. I asked him if I did it would he stop doin that stuff and he said yes. I really dont wanna deal with him for 2 more years of high school so I told him that I would do it. ((he’s nice again)). But now im havin mixed emotions…what should I do?? Help!!!