I had issues with my bigs. Yes, I had two. My original big flaked and ended up dropping the sorority, and I still see her around campus but she wasn't the greatest in the capacity of big sis. So I was then adopted by my 2nd big, whom I chose because she had been helpful during my new member period. She's a really cool girl, but I didn't grow very close to her as compared to how I am with other sisters in the chapter, and since she's graduated I haven't talked to her.
My lil, on the other hand, is a different story. She wasn't originally my lil. She was my 'guardian's' lil and when she transferred to another campus, and with her blessing, I adopted her as my lil. (There's an adoption trend here...

) She and I get along really well and, while we don't talk constantly, when we do sit and talk or hang out, it's always great fun.
So there's my little story.