I give no guarantees on saving marriages, but I can help prevent some potentially costly problems. Sorry, hubby: Venting the dryer inside the house isn't a good idea. Indoor venting brings moisture into the house. Some of that moisture is pulled back into the dryer through the air-intake, which means that it will take slightly longer to dry clothes. But the increased electric costs from this phenomenon are minimal and, frankly, the least of the problems associated with indoor venting.
More importantly, moisture from indoor venting can create undesirable conditions in your house, such as window condensation as well as mildew and mold, which can result in stained paint, wood rot, and unhealthy indoor air. Dryer lint and chemicals from dryer sheets, clothing dyes and detergents also decrease indoor-air quality. Note to readers with gas dryers: If you vent indoors, you will bring dangerous carbon monoxide and other combustion by-products into the house. So, get that dryer vented outdoors and breathe easy.