You don’t make her a priority.
More than one conversation I have had recently has focused on men who were either so submerged in their career, business, friends, or other interests that they barely made time to spend with their own girlfriend. As an entrepreneur, I understand the importance of focusing on business and progress, but I also understand the beauty and depth a relationship can bring to your life, and the importance of playing your equal role in it.
The woman in your life wants to feel valued. She wants to feel adored. She wants you to be emotionally present when you are with her. She doesn’t need to have you around constantly, but of course she wants to feel loved, just like you do.
If you stop putting in effort to make the woman in your life feel special every day, you lose your right to complain when someone else does.