if it was planned then they broked up before thursday...then if the condo was hers she invited him there, and maybe tried to get back together. he didnt want to, so she kills him...then her self. if it was his condo then for some reason mcnair let her in, and she might had tried to get back together. it does make sense, and its sad that a 20 year old has to end it that way, and before she would end her life she had to take his life and ruin his family life as well.