What makes mothers all that they are?
Might as well ask, “What makes a star?”
When you want someone, they don’t want you.
When they want you, you don’t want them.
When you have a boyfriend/girlfriend, all these people from your “past” try to make it back into your future.
It wouldn’t be like this if people knew what they wanted from the start, so save everyone a headache/heartache and just chase after what you want, or don’t even think to fuck up in the first place.