For most people, all three parts of sex are important: tactile, auditory, and visual. That is when you fvck your girlfriend, it is important for you to touch her, hear her moans and watch the process.
A great way to reinforce the latter component is to have sex in front of a mirror.
What makes Sex in front of a mirror so good?
First, eye contact. A babe's face during sex can't help but be arousing. Now you can watch it in any position.
Secondly, you have the opportunity to view your sex from all angles. It's like watching a homemade porno movie starring yourself.
Third, sex in front of a mirror will give you the feeling of having sex in a public place. If you've always wanted your sex to have an audience, you don't have to shock the public at the nearest movie theater.
Arrange a night of crazy sex for your babe and witness all her emotions.