Amanda: Tell me the truth
Amanda: Are you good in bed??
Sarah: Nobody ever complained :P
Jessica: To be honest, I don't think I'm good
Jessica: Also nobody ever complained
Jessica: But I guess it's not something you tell people
Jessica: I wasn't praised either
Jessica: I don't think I am a good lover 
Jessica doesn't perceive herself as a good lover. Sarah has a positive regard about herself in this matter.