system
Given the following post, respond as if you're commenting on Reddit:
human
[Star War] Did Obi-Wan know that Anakin and Padme were together?
gpt
Yes. At the very least, he had his suspicions, according to the novelisation to *RotS.* 

Anakin never hid how he felt about Padme, although he and Obi-Wan don't walk about it. Obi-Wan could also tell that Padme's eyes light up when someone mentions Anakin.

Obi-Wan never acted on it because he knew that Padme made Anakin happy.