My result of chasing after my Mom's God-daughter but i need more help..?

So as I explained in my Last question about my moms super hot God-Daughter (who is not related to me) well here is what happen: last week I went to her house to sleep over cus my aunt wanted to go sleep over there so I agreed(just so I can go see her :) ) we left Saturday stayed over Sunday and came back Monday morning and it was cool I had a lot of fun just talking and stuff so me and her hung out all Friday afternoon... I wake up Saturday morning to go for my run get back I shower and as I'm walking out the restroom with nothing but a towl on( take it into consideration I am 165 pounds of Lean muscle so I have semi-big arms and super cut abs well all in all I take really good care of my body) her eyes got big and she couldn't stop staring at my body(she did not know I look this good she couldn't tell cus of the suit I was wearing at my cousins 15) so she was in a trance she couldn't take her eyes off my body LOl so what happens is that later on that day and I'm talking about midnight she comes into my room I was still awake... and we are talking and she starts asking me sex question and then she starts to kiss me we made out in the bed next thing I knew we were on the floor naked with nothing but a thin blaket over us... and she was a virgin cus I had blood on my penis and she cried and no I was not wearing a condom when I know I should have we did it 3 times that night its was the best sex I've ever had she gave me a amazing BJ and idk if she has had practice or not but it was amazing.. so the next day we wake up she for some reason doesn't speak to me at all she just said bye she looked really upset with me... did I do something wrong can anyone answer me this question please.. I like her a lot and I want her to be my girlfriend but she won't speak to me :( (by the way I live in La and she lives in Burbank so we live really far so we text and that last message she sent was "I'm Sorry" sorry for what? Was I that bad :(?