boyfriend trouble help

so I need some advice ladies.... my boyfriend has this friend and we'll call her Amy. Amy has feelings for him. he knows it. I remain calm and reassure myself that Amy is not a threat is she's a crazy bitch. Amy texted him a week ago and said the following Please don't be mad at me... I hate it when your mad at me." he responded with don't do stupid shit. then later on she texts him saying "I love you." he responded with with basically saying you had your chance you blew it. what do I do here ladies