Dating your friend older sister
If you cannot see yourself with her for a long period of time, it is best to avoid asking her out on a date so as to keep your friendship with her sibling from failing as a result of tension after a breakup.
Though you may think your friendship may last after your relationship with the sister has ended, it may change in unexpected and undesirable ways.
If there is no chemistry between the two of you, and you have never even talked to her, perhaps you should get to know her first before you ask her out on a date, so as to keep yourself from an awkward situation if she were to turn you down. Reassure her that you have talked to her sibling first, and that you just want to get to know her better on your own.
Be calm and confident, and above everything else, be a gentleman.
Can u move ahead in this game if it were u, share your views. But, Yes, something could be wrong in dating Your own sister's friend.
Make sure the sister actually returns your affection.I usually wonder what the motives are for such younger sisters because their elder brothers are useless to them bleeping-wise. But honestly, I don't advise dating your sister's friends. In case you quarrel who should your sister support? So, why stand between your elder brother and a qualified bleep that is your friend? There's is absolutely nothing wrong in it, why won't I respect my bro because he's dating my friend?
that's stup1d and childish and no mature girl would do that.
Be honest with him about how you feel, telling him that you feel something for her that just won't go away.