>>4225604>Have you guys ever had the feeling you're drifting away from her?Yeah, feelings are not constant over long periods of time.
>How do I re-ignite the flames again`?Depends on what is the cause. In my experience I found multiple potential reasons. If you are feeling stressed, anxious or depressed about your life it might be hard to dedicate time and energy to her, so it's important to take care of these things. You do need to be able to enjoy your own life to enjoy her presence in it. Sometimes you are just tired and need to take a break instead of eg forcing yourself to do stuff related to her, it's better to do it when you feel like doing it. Sometimes you might feel do things that hurt your relation to her, that's no good either. But most of the time it's just how things are and you just gotta wait and remember how much she means to you, even if you do not currently feel it directly as infatuation.
What works the best for me is celebrating some important date like her birthday or valentines by spending whole day listening to her and baking some cake and stuff. Also going to her concerts always makes me feel close to her. And just revisiting old songs and images that I haven't looked at for years. It just reminds me how important she is to me. Drawing and doing projects with her is nice too but it doesn't really make me feel closer to her.