As a single, over excited or over aggressive husband's are usually a BIG red flag. If the wife and I get along but she seems like she's only doing it for him then I hesitate. I've also run into couples with an overly aggressive wife that can be a flag too. I tend to depend on my sense of people...if their personable, fun, casual that's a good start...for me anyway! Like singles for couples, good couples are hard to find! JMHO...LOLOL!