This guy I met through friends is tall, strong and full of confidence and manliness. We've flirted a few times and he asked me out on a date. Second date we kissed and he tried to lift my shirt and I stopped him. I explained to him that I am not ready to have sex yet, and he asked me if he could just kiss my neck, and lift my shirt and kiss my belly and I said I'll think about it. Should I allow him to kiss my neck and expose my belly?