Extroverts usually love to be the center of attention, like a showy peacock! Being surrounded by people and activity makes them feel happy and excited. Participating in group activities that let your talents shine is a great way to stay in a good mood. Just remember that other people want to share the spotlight sometimes, too!
You are on a good way. Flirt could mean you guys only met or fell in love a few days or weeks ago, but that doesn't mean you can't fall in love! Flirting is something people do a lot, you see some one you like and in that case you of course you hope that person to like you too! When you get to know this person better you could be an amazing couple! My advice: Hang around them more, try and talk to them and once you achieved that: Do something fun together! If you don't want to go on a date, just ask some friends with you. Could be a lot of fun!