The stress of looking after our adopted son led my wife to cheat – now I feel worthless and can’t even get an erection

DEAR DEIDRE: THE stress of looking after our adopted son led my wife to cheat with a man she met online.

Now I feel worthless and I can’t even get an erection.

How can I get our marriage back on track?

My wife and I have been together for 12 years. Three years ago, after failed infertility treatment, we adopted a two-year-old boy.

Although we love him to death, our son went through some trauma with his birth parents, which has left him with some behavioural problems.