You need to balance your friends, hobbies, girlfriend, and family.
When one of those areas takes precedence, it is okay. But it must not take precedence for too long. It must be reined in to preserve balance, equality, and happiness in different areas.
There is another aspect to this balance: go where your soul takes you. If you want to hang out with your girlfriend every day for three weeks then do so. But recognize that balance is needed and cancerous growth of attention has to be reined in before it becomes detrimental to other parts of your life.
But ultimately, it is down to your soul. It knows what to do. Do as you feel and if you begin to question whether you’re spending too much time devoted to a particular area, then you already know the answer.