When your teen asks you about your past, do you always tell the truth? My dd asked me the other day while studying the reproductive system how old I was when I first had sex. I took a deep breath and told the truth. She didn't bat an eye. I was 17. I went on to tell her I was graduated from high school and was entering my first year of college and that he wasn't the right guy. I think I may have just told her that its okay to have sex at 17!! She has asked about drugs before. I only smoked pot a couple of times and didn't care for it so I didn't have any heartburn answering that question. What do you do? Do you tell the truth or lie your butt off?