Why I write on questions for your girlfriend
Always be attentive when she talks, and ask random questions every now and then. However, never give your fixed opinion about any past experience. First try to understand her, and then ask relative questions to support her feelings. After you ask questions about her, talk about yourself, how she feels about you?. You can also present some hypothetical scenarios, and ask her how would she feel if you react to some situations in a certain way, and if sometimes you don't have enough money to make both ends meet?.