I don't have absolute trust, that's why I intend on being around a lot when my daughters are teenagers.
There is no way I would have had sex at my parents house (don't think I ever have) because they were around so much. I don't know where else I would have had sex. I would have had to have been very sneaky.
I'm also not letting them date until they are 18 which will be their senior year in high school. They'll be 18 by the time the senior prom rolls around.
Probably not easy being a parent. I see things all the time that shock me.