Both of my geckos eat 2-3 medium sized crickets and maybe a mealworm or two every other day and they have a mealworm dish filled at all times for when they are hungry between feedings.
They are both juvenile males. As of right now they are still getting along and I monitor them every day so they still share a tank, however, I do have a second tank set up for when I do have to separate them.
When I had first got them, they were too young to tell the sex. I had decided to get two because it looked like they had come from the same clutch and seemed to get along as well as I had heard the someone I know said her geckos did better with a companion. As of now, they still actually get along really well and have not shown any signs of aggression, although I am keeping an eye out.