I need babysitting help:/?

okay so im 12 and next week(whole week) i gotta babysit a 7 year old gymnast. shes really sweet and our moms are best friends. Im saving up for a new phone. and Mrs.Jennifer pays $15 a day and im baby sitting every other week! Its worth it! Anyways idk what to do with her! all she does is flip around and stuff , im a cheerleader but still! We have almost nothing in common. a few days ago she asked me about boys. bc she has a bf and so do i. her boyfriends brother is my bf! Idk what to do with her for a whole wek! maybe i culd give her the boyfriend talk from when my older sister told me when i was 7.idk im just scared its gunna be boring! plz help:/