Last october 8 my partner confessed that he had a child with his ex. He said that his ex told him about her condition when she's 6-7 mos pregnant. I was shattered but we decided to hold on to each other. Have we made a wise decision?

If you are ready for a relationship where there will be an ex's presence perhaps always because there is also the baby in question who belongs to your partner as well, then go ahead. Else, I think it is quite a taxing situation to be in, as you don't know how your partner's loyalties would change and you never know for the sake of child, he would want to get back to his ex. You know your partner well, so just try to see through him. Be futuristic, and try to gauge the situation, and accordingly make a decision.