Derrick Rose
Ryan Allen -- who's also a defendant in the case -- told the court graphic details about the night ... including the lighting in the bedroom, kissing the accuser, using lube and a condom and the accuser's pink vibrator. Allen testified the sex was consensual and that the accuser was completely sober.
Rose and Allen have been pals since childhood. The accuser claims they and Randall Hampton broke into her home and gang raped her.
Allen testified he flushed his condom after the sex ... unlike Rose who said he took his with him when they left the apartment.