Listed below are some of the attributes of a twin flame relationship:

You had dreams or visions of this person and/or your energetic relationship before ever meeting in this lifetime.
Meeting your partner felt like “coming home” to a familiar, long-lost energy. After meeting, you had “memories” of other times and places with that person that are not part of this life experience so far.

Since we've meet you've been triggering my visions like never before. Now I see the future clearly. As for the feeling, we both knew.