My dear Jil, I’m afraid you need to protect yourself. That’s the first order of priority. If he’s going to be messing around and catching all sorts of venereal diseases then you have to protect yourself. You must insist on his use of condom. You’ve been lucky three times. You’ve received treatment for venereal disease on three occasions on account of his philandering. You may not be fourth time lucky. My worry is that he’s going to catch something of the order of HIV and infect you. That’s a higher order of magnitude than all you’ve dealt with so far. And this is a young marriage. That’s what makes it so worrisome. If he’s all over town in a two-year old marriage something is either seriously wrong, or something wasn’t right, or he’s got a problem. The corollary though is that your insistence on condom to protect yourself will affect future conception. But at least you’ll be safe. And you already have a son.