So my cousin saw my sister’s ex boyfriend that she dated years ago. My sister is now married with kids. My cousin texted her telling her that she saw him and my sister relied, “lol okay” not asking who it was or anything. My cousin suspected that my sister had an attitude and told her that. My sister sent back a long message and to sum it up she said that she didn’t care to know who the ex she was talking about and that’s disrespectful to even text her something like that when she’s married. My cousin said she didn’t mean any harm. Did my sister do the most or no?