What is why would a guy like then unlike my picture?

There could be several reasons why someone might like and then unlike a picture on social media. Here are a few possibilities:

1. Accidental Like: It's quite common for users to accidentally like a photo while scrolling through their feed. Upon realizing the mistake, they might unlike it immediately.

2. Seeking Attention: Some people use liking and unliking as a way to get noticed. They might hope that their action will prompt you to engage with their profile or content.

3. Indecisiveness: The person might have second thoughts about liking the picture, possibly due to personal reasons or because they reconsidered their online interactions.

4. Testing Boundaries: This could be a subtle way to test the waters of your relationship, seeing how you might respond to digital interactions without making a more direct approach.

5. Privacy Concerns: They might be concerned about privacy or how liking your picture could be interpreted by others who follow both of you on social media.

6. Social Media Strategy: Sometimes, people manage their social media presence very carefully for aesthetic or strategic reasons, periodically unliking content to maintain a certain profile presentation.

7. Technical Glitches: Occasionally, technical issues within the app can cause likes to be removed unintentionally.

Each person's motivation can differ, and without direct communication, it can be hard to pinpoint the exact reason behind this behavior.