What is why does he keep walking past me?

If someone keeps walking past you repeatedly, there could be several reasons behind their behavior. Here are a few possibilities:

1. Coincidence: It might simply be coincidental, especially if you both frequent the same area regularly.

2. Curiosity or Interest: They might be interested in getting to know you or are curious about you. People sometimes try to be noticed by those they are interested in.

3. Nervousness or Shyness: They could be unsure how to approach you and are trying to gather the courage to start a conversation.

4. Routine or Habit: Their path might be a part of their daily routine, like going to a class, work, or another common destination, leading them to unknowingly pass you often.

5. Looking for Attention: They might want to be noticed and hope that by walking past often, they'll catch your attention.

6. Misunderstanding: They might not even realize that they're walking past you repeatedly and have no intentional motive.

7. Checking on You: If the person knows you, they might be concerned about you and want to make sure you're okay without directly approaching you.

If this behavior makes you uncomfortable or curious, and you feel safe doing so, a polite conversation can often clear up any misunderstandings or reveal their intentions.