How do you know if your girlfriend loves you?
Tell her how you feel; then ask her how she feels.
You can find out if your girlfriend loves you in a few different ways. The best way to find out would be to ask her.
You know if your girlfriend still loves you if she does something for you. Love is not sweet words but it is deeds. If she ever really loved you, she will have sacrificed herself in little ways just for you. If she never cared about you, she never loved you. If you don't know now that she loves you, then you know she doesn't. It should be obvious.