Hiding your introversion is a bad idea because introversion itself is not a problem. It only causes problems if different needs affect factored into a burgeoning relationship and handled with respect and understanding. No doubt introversion-related issues will come up over time in a long-term relationship--healthy relationships are fluid and ever changing--but if you start out being honest with yourself and the other person, you will have built a foundation for later adaptation, compromise, and mutual comfort and happinesses.
Sophia Dembling, Introverts in Love: The Quiet Way to Happily Ever After
introvert, love, relationship