Very difficult to impress wife, but simple to impress girl friend Wife never trusts but girl friend always. If you take you wife to top lands of Metz she will say its good, but if you are with your girl friend, she will say Beautiful and amazing. Thats the difference.
Yes girls are most impressed by your personality and how you treat them. Spend Quality time with them and make them feel like there the luckiest girl in the world. And never ever lie to them. Trust me lieing will stab you in the back
You can give her gift which is favourite of her and remember her on special occations(valentine day, her birth day) etc
Give some beautiful Gift and spend a little bit romantic time.. Try to go for a candle light dinner - Its will works gr8..