Money is just an object. We give it value. Our values and belief system make it either good or evil.
It's called the honeymoon effect and it's normal. It's a fantastic time in a relationship, but it does fade. People mistakenly make commitments during this period and then realise that the honeymoon effect influenced them. When you are ready to settle down, you are ready to appreciate the "depth" and stability of your relationship.
Let people do what they want to do.