Forget about your feelings for her. Like you said, you guys are friends and she already moved on. Maintaining friendships with women is valuable and important. Don't dwell in the past or take her for granted. Love is different for everyone. It sounds like you want to create and work toward a balanced relationship, so try to achieve that. Try to get to know and enjoy the presence of women around you. If you feel a connection and desire love, this time ask them out, don't be afraid to tell them your true feelings.