I am wanting some questions answered and some girl advice.?

READ THE BOTTOM CAREFULLY PLEASE AND ANSWER THE LAST QUESTION.Ok theres this girl i saw at my cousins hou se and me and her went off in a dead stare into each others eyes. And ive never really did that with a girl and ive been in a good amount of bf gf relationships but i dont know why i stared into her eyes so deeply is that a good thing? And the next time i saw her she looked me up and down 2 times and i had my shirt off the second time and yes i have a 6 pack. But i didnt speak because i feel uncomfortable talking and flirting with a girl i like around family. And she hangs out with my cousin all the time and lives next door to my cousin. And she already know I think shes cute my aunt told her that on her own. And before my aunt to her I thought she was cute she asked me do you think she is cute? I said yes. Then my aunt said illl tell her that I said I didn’t really care. And so she told her after the fact that I already left to go home. Was that a bad thing my aunt told her that I thought she was cute? And what type of reaction can I expect from her when she finds out I think she is cute a good or a bad one? And what does it mean when we go into a deep look in each others eyes like that for a good period of time? And why is she on my mind all the time and i havnt even really meet. And is it ok to go to her house if my cousin isnt there and introduce myself and ask her to hang out? And should i find out what she said to my aunt about me after the fact she told her i thought she was cute before i ask her to hang out? Or should I find out what she said to my aunt about the cute thing? And would it be ok if I started a conversation with her and if I have really deep eye contact and we pause and look Into each others eyes is it ok if I tell her you are very beautiful or have very pretty eyes yea that's tacky but would it be ok to say ? And what should I say to introduce myself like hi what's your name is that ok? Or should I say something else? And like I said would it be ok I'd we stared into each others eyes and I tell her you know you are beautiful or very cute? I know it's tacky yeabut that's what I feel and I'm not ashamed to say that to her. Because that's how I feel. And when I tell her she is beautiful not out of the blue like if we have a long eye contact moment with some smiling and it's gets quiet is it ok to tell her she you know you are really beautiful you know that. Would that be ok if a real deep stare in a conversation happens between us and can I expect a good reaction from her about the cute thing? And like I said is it ok to tell her I think she is beautiful if there silence and a long eye contact period between us? And if I told her that I think she is beautiful would she appreciate it during A long eye contact moment?