From your post I'm gathering that you are both in your mid twenties. There are loads of different bikes out there so I agree with the advice given above. And since I'm the Unofficial preacher for the Electra Townie, that's what I'm recommending you 2 should try. Nice comfort beach-cruiser style bikes which are ergonomically designed. If you will be riding in areas that have nice paved roads/bike paths and not many hills, you will be happy. My only complaints with the Townie are the stock seat and pedals. But those are easy to swap-out. I also opted for swapping-out the handle bars for Electra's stock bullhorn cruiser bars. Below is a thread on the Townie that has been running for 11 years. Browse it a bit. Either way, test ride as many different bikes as you can before making a decision.
Good luck!

Electra website: http://www.electrabike.com/?field_markets=am

Townie Bike Forums thread:http://www.bikeforums.net/recreation...ew-townie.html