Grace and Jack

Grace was about to disobey her mother when she invited Jack over to have sex. When he gets over there she, all of a sudden, changes her mind. I didn't understand that because all teenagers are horny as hell and sex is what they want like all the time. She knew she wanted to have sex with him and it is going to be so hard for the both of them to be friends because, they are sexually attracted to each other. Hopefully, Grace will keep her word on being his friend or she might become a friend with benefits.