My first GF was my best friend's sister. In high school I dated another friend's sister. A lot about dating is just knowing someone if you ask me. Has anyone here not hooked up/dated the sister of a male friend? If anyone hasn't, do you think you will ever lose your virginity? Edit: a friend's hot cousin can count too I guess, since I did that before and I made this thread and shit. Bonus points to anyone who dated a friend's mom or grandma or great grandma.