Its normal for leopard geckos to seem bored. I copied this from [MENTION=4925]Hilde[/MENTION] post from a different thread, she put it in better words than i could
"Reptiles aren't meant to go for walks. They're ectotherms, cold-blooded creatures, which means wasting energy on useless activities likes walks and exercise sessions is hard on them. Warm-blooded animals have no problem replacing energy. Cold-blooded ones can't do that very efficiently. They tend to move when there's a good reason, not just for the fun of it. That's part of the reason they can sit in one place for hours, while we'd get bored silly and go run off someplace to do something. They can't afford to waste energy like warm-blooded animals can. Long periods of activity (walking for exercise) does them more harm to them than good"
You could have health problems from having two leopards in the same tank. One might become more dominate and will bully the other from eating or laying where it wants in a hide. It can stress the gecko out. There could be fights that come without warning that could lead to a dropped tail, scratches, bites, or failing to eat. Its best not to keep leopards together. Some people have had success with it, but on average, its best to keep them separate.
A male and a female should never be keep together unless breeding, and two males should never be keep together. Your best chance is with two females, but in my opinion, the chance of problems outweighs the rewards, because the rewards are none, besides you have more leopards to look at.
It's your choice, but if you do decide to get another cage mate, you need 3 hides for each individual leopard, which means you need a big tank.