I have a Nucanoe Frontier 12 that I can rig tandem or single, and it has incredibly comfortable seats. It paddles better than the Internet says it does, but it's not a distance boat. It also has a small flat transom for a motor. There is not a peddle drive for it that I am aware of, and it may be big on your Civic, but it was the best solution I found for a tandem boat with some flexibility. It's a great fishing platform.
PS - be careful with marriage advice from Clayton.