Introverted people sometimes need an extra push to be social. You can help them by encouraging them to do activities outside the home regularly. You will want to limit the amount of time they spend in a crowded space because it can cause them to feel very nervous and uncomfortable. Instead, go places where there are people but not so many men and women that they don’t feel or behave like themselves. Also, know that they may be very quiet at times. That doesn’t mean they aren’t having fun or that they don’t enjoy spending time with you. What it does mean is that may be waiting for the right time to tell you that they’ve enjoyed the evening.