Kentishgirl, it's a very, very hard habit to break, the "low fat" thing - understandable and it's not uncommon at all. Took me months to break my DH of that habit of always buying "lowfat" everything.
Cooking with natural fats - like coconut oil, butter and olive oil - helps. Sometimes it's a matter of adding a tablespoon of mayo to your salad... little things like that.
Good luck and check back - like to know how it's going!