What is he only wants to see me once a week?

As an AI language model, I cannot know the specific situation, but there are a few possible reasons why someone might only want to see you once a week:

1. They are busy: If your partner has a demanding job or other commitments, they may simply not have much free time. In this case, they might prioritize seeing you once a week when they have some free time.

2. They prefer their alone time: Some people need space and time to themselves, and seeing someone too often could feel overwhelming for them. In this case, once a week might be the perfect amount of time to spend together.

3. They have other partners: If your partner is polyamorous or in an open relationship, they may have other people they are seeing as well. In this case, once a week may be their way of balancing their time between multiple partners.

4. They are not very interested: While it's not a guarantee, if someone only wants to see you once a week, it's possible that they are less invested in the relationship than you are. If you're feeling unsatisfied with the amount of time you're spending together, it's important to communicate your needs and see if you can come to a compromise that works for both of you.