I tend to talk about sex in the confessional if it is appropriate and to young couples preparing for marriage. Yesterday I was visiting someone in the The Lanes, which is the older part of the city, it is a jumble of small esoteric shops. In order to get there I had to go past a branch of Ann Summers in the main shopping precinct, although I tend to keep my eyes cast down, in order to avoid bumping into someone I look-up and got glimpse of erotic lingerie. I walked on and noticed one of my former servers, he must be in his mid-teens, rather heavily kissing his girlfriend, they were too pre-occuppied to notice me. I went on and noticed one of our young mums distracting her six year old as they passed another shop which rather explicitly advertises "sex toys", not just in the shop window but on a board on the on the other side of the road. A little further on and I would have passed a couple of rather raunchy gay clubs, quite quiet during the day but very different at night, I don't go there at night.
Even our sweet shops on the seafront sell Brighton Rock in the form of genitalia.
Brighton is highly sexualised, you can't avoid it in Brighton. Trying to keep our children away from explicit sexual material is almost impossible. One of the reasons I advise people not to watch EWTN, except on line, is because I understand you can't get it by satellite except in a package with rather unpleasant material which should never be even glimpsed in a Catholic home.
Rather than burying their heads in the sand Catholic parents and Catholic schools really do need to take sex education seriously. If it is not done by parents and schools, it will done by our society and our children's peers, and done very badly, with disastrous results.