Well i have an older sister and we were drinking together with some of her friends and mine 2 weeks ago. I had a good connection with one of her friends, and heavy flirting, kino escaltion and kissing. After that we have seen each other twice while being at my sisters, again heavy flirting and so on.

Asked her out yesterday over a text. But now she seems to back down with "it would be weird dating my friends younger brother" and other bullshit excuses. She took some time to answer. Seems like she fears that she will loose her good friend (sister) or is this just a test to see how far im willing to go?

Quite confused on what the next step is. Should i just push her away, with a "seems like you plan way way ahead, so your right, this is for the best for both of us:-)" kind of text or should i approach this completly different? Feel quite lost and would definitly appreciate some help on this matter.

I doubt many here will agree with me on this one, but personally I would turn the sister into a pivot. That is strictly based off the relationship I share with my sister though.