A common characteristic of twin flames is that both feel as though they have known each other their whole lives when they first meet. It is common for twin flames to also feel love at first sight.
Another characteristic of twin flames is that they may feel as though they were born to have some higher calling on the planet. Twin flames may also feel pain when they are not together, as they feel that they have strong compatibility with each other and closeness on many levels. Twin flames also feel as though they are very strong and capable by themselves in any given task.