You might want to look at tandems. My wife and I have been riding tandem bicycles for nearly 20 years and have enjoyed every minute. We now have two and we never have to wait for the slower rider and always are close enough to have a conversation. For the price of two decent road bikes you can get a new or used tandem. You might try renting one prior to purchase as some folks just don't find it to their liking but others, like us, would have it no other way.