You need to confront her about the matter
If your crush's sister tells your sister that your crush likes you, it's a good sign that your crush may have feelings for you. It might be a good idea to talk to your crush directly to confirm these feelings and see where things go from there. Communication is key in situations like this.
In Dirty Dancing, baby's sister Lisa has a crush on Robbie their waiter!
no but she has a crush on him wich my sister thinks is icky
no
Katie potter is not famous but shes Emily potters sister and she has a crush on luke benward
He has a secret crush on her
no because they are brother and sister
Have lesbien sex with his sister it fun
Depends if your crush is a male or female...
this could mean that your sister might like the same guy as well.
i think you need to talk to your crush about your friends crush who has a crush you on you and your sister knows about your crushes crush who wont tell you who they're like TOTALLY crushing on but they want to but promised your crush they wouldn't tell you who their crush was because their mom wont let her date and her sister is only a year older but she's allowed its SOOO not fair omg like wtf, and my sisters crush doesnt even like her so omg like LAWLZ!
it was definatly crush because im his sister