It Ends Tonight- Chuck & Blair / Nate & Serena / Dan & Vanessa- AU

PLEASE READ TO UNDERSTAND so this story is au! and i will split up the summaries for each individual couples well for cb first - ( they have been together for awwhile) they have just as sex she gets pregnant.. she denies him and he is mean to her but he comes back and apologizes and they kiss and then she deals with the pregancy and he hates and truly doesnt want this baby and the only thing that is keeping her to want it is chuck.. but then they get into a fight ( rooftop) and later on he comes and apolizgizes and the kiss again.. but we later find out she aborted the baby.. and chuck is mad and they break up and she tries to get him back.. ( will they finally be together? ns- they have been friends but secretly like each other and but they are tobusy with other people.. they are hurt but then they stay friends but obvioulsy theres more and they try to kiss but tripp is there and she goes with him... and later he tells her how he feels but tripp is there.. who does she choose??