My oldest daughter (19 in 2 weeks) isn't biologically mine, but I've raised her since she was 4. Her and I are fairly close.
My 16 (almost 17) year old was my first biological child and she lives with my ex-wife in Indiana. She actually moved away (far away) when she was only 1 year old. My ex-wife kept us from talking basically for her entire life. We ( my family and I ) had to give up on her and let her contact us. Only a few months ago, she contacted my father ( was able to search his profile on Facebook ) and when my father told me, I immediately sent her a message and we started talking immediately. I've seen her in person a total of 3 times now. In fact, the last time we saw each other, she got to finally spend a night out with us away from her mother for the first time. It was undoubtedly the best night of my life. We bonded so much in those few hours we spent with each other. Her and my other daughters also get along great. I don't get to see her very often, but when I do it's magical. We talk every day via text on our phones, and do a video chat once a week.
My youngest daughter ( 14 in 2 weeks also ) and I are VERY close. She is a huge daddy's girl. She uses me as furniture basically.
I'm going to be so sad when she leaves for college. I dread that day.