Some tips if you are a boyfriend
If you do everything to show your girl that you love her and she knows how much you love her, never leave her hanging. If she gets a little wild or a little lost, do not keep her going off the path alone, talk to her so she knows you want her to find her way back. Do not make things more complicated. If she is being 100% absurd, do not fight fire with fire. (there is a line between seriously insane and "crazy" with emotions because you probably did something to upset her) Find a way to open up to her. If you think she is out of her mind its probably because she has a lot of feelings and wants to talk about them and then wants you to talk about yours. No one is perfect, no relationship is perfect, nothing is every going to be perfect but if you know how to make someone feel better, about anything at all, no matter how many times you've heard it, no matter how much you do not want to hear it again, at least just listen, without any hesitation. And do not forget, every action has a reaction. Sometimes people over react, but that might not be how they are feeling.