Hot Take: I don't think Obi-Wan is being literal in this scene, but instead asking Anakin to read between the lines and to maintain the delicate balance he's kept thus far with his relationship vs his duty to the Jedi Order. The way Obi-Wan is written over the course of the story often implies that he knows about Anakin and Padme's relationship--Padme tells Anakin that Obi-Wan came to see her in Revenge of the Sith because he's worried about Anakin, Obi-Wan goes to her when he's trying to find Anakin after Order 66, or even in TCW where he sees Anakin sneaking off while making Rex cover for him and knows it's about Padme.
Obi-Wan knows that Anakin and Padme are in some sort of relationship. He doesn't know the depth of it, he doesn't know that they've been married for years at this point, but he does know that they have feelings and are acting on them to some degree. He's never said anything to stop it before. In this moment where he talks about Satine and feelings, it's not just a regular chat, it's specifically about Anakin having lost it, this is after he's become emotionally volatile about Padme, after he beat Rush Clovis pretty badly (to the point that he scared Padme off their relationship for awhile) and is obviously unbalanced. I don't think Obi-Wan is literally asking him to stop the relationship, he's pointing out that feelings are natural, of course they're allowed within the Jedi, but that Anakin is sliding into dangerous territory and he's asking that Anakin work to regain the equilibrium he had before this, to refocus on his internal balance and find it again. Because, several episodes later, when Anakin has calmed down and refocused himself, Obi-Wan knows he's still seeing Padme and doesn't object again. He's not trying to stop it even knowing that it's still going. Obi-Wan isn't asking Anakin to give up the relationship for the Jedi Order, but to take a step back and get his shit together again for the sake of the Order. He's just asking Anakin to read between the lines to understand what he's actually saying (keep the relationship, feelings are normal and allowed, but get your cool back together), because that's how Obi-Wan speaks and this is a delicate conversation. He's asking Anakin, if you're going to keep this relationship, you have to maintain your balance with your emotions and not fly off in a rage about it, because you are a level 100 psychic space wizard who can kill people with your mind powers when your emotions are out of whack.
