duchess
But why the need to say anything? That's what I'm questioning.
What does anyone gain from creating a potentially dramatic situation to the effect of 'stop messaging me'? In that situation the conversation is only going to go a few way ps and it'll come down to 'you shouldn't message me because it might look like we fancy each other'.
The existence of you both messaging each other isn't what creates the impression that you might be enjoying the attention, it's the way you talk about it like it's something potentially scandalous or something that needs revealing etc.
Put it this way: hypothetical
My DH is texting a female friend. We both know her and get on. He doesn't tell me every time they text, why would he? If I found they had been texting platonically then NOTHING would go through my head other than 'oh they're messaging daft memes'.
If the female friend was all 'I'm texting Maisy's husband but now I feel bad because I know he hasn't told Maisie that we text and our messages are funny and friendly, but I'm totally not interested in him at all. Should I come clean to Maisy about texting her husband? Or should I tell Maisy's husband that he shouldn't be texting me anymore?' then I would take that as the friend enjoying the thrill, attention and potential drama.
If it's a wholly platonic friendship then there doesn't need to be a confession, there doesn't need to be a coming clean, there doesn't need to be a group chat, there doesn't need to be a discussion about why he should stop texting you. You would carry on as normal, but probably be a bit mindful about the frequency of the messages. The fact you think there's something to debate/confess/have a conversation about makes it seem like there's more to it.