Do you think his wife saw?

I used to have a good relationationship with my boss, not overly flirty but we did have a laugh and message each other non work related things sometimes and have banter etc. Then suddenly he just stopped replying. We still get on so well at work but the messages stopped. Why? Do you think his wife saw and jusy didn't like it? It felt very random to stop like he did.

Do you think his wife saw?
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