person A: My sister has been dating this guy for about 7 years and I wish she would drop him.
person B: Oh no_comma_ it really sucks seeing someone you care about date someone who isn't good
person A: Yeah_comma_ he's a bum!  He mooches off of her_comma_ she works and he sits home and drinks.1
person B: I bet if you say anything about it_comma_ you're the bad one too