What is the point me telling lies just to cover up my gambling track if being asked about such and besides it is my right to do whatever I feel is okay with me to multiply my source of income. So telling one a lie about your gambling loss just to cover up wouldn't help matters because you never can tell if the person could be the one to help you get back on your feet through advise or even teach you more gambling techniques that could be of help to you.
Of course, it depends on your situation, but it’s a different thing if it’s your partner. Even if you’re the one who makes the most money in the household, you still need her to know, at least for me. It’s her right as your partner since it involves money and could also affect her if things get out of control later. Aside from yourself, your partner is the next person who can help you the most, not financially or by recovering your losses, but more on the emotional and mental side.