Martha: Jessie's bf sent me a message 
Samantha: What??
Fiona: OMG
Martha: <photo_file>
Samantha: "Hi Martha, you looked cute in that green dress today"
Samantha: "You should wear it more often"
Fiona: What a bastard
Fiona: Did you tell Jessie?
Martha: You think I should?
Martha: I'm not sure. She can take it the wrong way 
Samantha: Right.
Samantha: She can be a bit unstable.
Samantha: But she should know that Tom is an asshole. 
Jessie's boyfriend sent Martha the unambiguous message. Samantha thinks Martha should tell Jessie about that.