thanx man juz didn't no how to take it

last night at 2 in the morning my first and only love woke me up beating on my window,i ansered the door and she was drunk and crying.we were 2 gether for 2 years we met wen i was 16 and she was 15,its been over 2 years since we have been together ans she still crosses my mind everyday but so much has changed since then and i dnt think we could ever be 2 gether again.i let her in and she was saying she misses me and wish we were still together,my feeling are still very strong for her and i hate seeing her cry so i held her and comfurted her and one thing led to another and she wanted to have sex and i turned it down,i dont belive in taking advantage of women,she got up and left,wat should i do ,did i do something rong?

im new to mingle and just looking to meet new people feel free to drop me a line thanx