<human>: Summarize the given text in a few sentences.

This is all a huge mess and very complicated so I will try my best to keep it simple. Basically I am an affair baby, but I didn't find out until a few months ago. I'm the youngest of 4 kids and I've always been really close with me "Dad". Mom died when I was 11 and I was never close with her before. "Dad" was everything to me growing up. My brothers are all way older than me and we were never too close. Something has always been off and I haven't looked like my brothers or dad much. Curiosity got the better of me and I brought it up to my father and he assured me I am his completely. We did get a DNA test none the less and lo and behold I'm not his. My mother did have affairs on him and was cheating when she passed so not totally unexpected I guess but it really did surprise him. He told me it would be fine but NOTHING has been the same since. 

He doesn't call me anymore... it went from once a week to never unless I call him. He hasn't seen my daughter in 4 months and she misses him. I miss him so much. I'm just so profoundly sad. I feel alone in this world. I have no clue who my actual father is and there really isn't anyway to discover. I want to have what I had with my "Dad" before but I'm afraid its gone, forever. Is there anything I can do?
<bot>: Found out my "Dad" is not my Dad. He hasn't taken it well and has really dropped out of my life. I don't knwo what to do