The most important thing when it comes to keeping your girlfriend in love with you is making sure that you communicate openly and honestly with each other. Showing her that she can trust you by being reliable, consistent and dependable will help build a strong foundation of respect and admiration between the two of you. Additionally, it's important to make time for each other outside of regular commitments like work or school – doing something special together on occasion helps keep the spark alive! Lastly, putting genuine effort into understanding her needs, wants and desires is essential if you want to ensure she remains head over heels in love with you.