You think you know your man, but it takes travelling together before you really do, as the Huffington Post's Amy Shearn explained.
First, there's dress. Perhaps you would describe him as a neutrals kinda guy. Until you got to the tropical hotel and he is sporting a Hawaiian shirt. Or a 'Yellowstone' baseball cap in, er, Yellowstone National Park. Or a beard.
Next, you learn what he really thinks about you on the economy-class flight. The way he hogs the foot and armrests and leaves you two centimetres of wriggle room speaks volumes.
You might discover his penchant for sea-glass-spotting. Or knowing Latin names for local plants. If visiting home, the twang of his local patois, from his mouth, might put him in a whole new light.
When you're locked out of your cute B&B at midnight, his reaction tells you the kind of man you're dating. Is he the sensible break-the-lock-with-a-credit-card type? Does he treat it as a fun chance to sleep on the beach? Or does he break down and blame you?
Most importantly, does he know how to spend time apart? A man who will leave you to explore the museum alone is a man you will want to spend lots of time with!