Middle of night

Well i have now fell in love with miley cyrus songs :) hehe well her new songs anyway! i want her cd so bad now.  I really like every rose has it thorn. heheh so i got a werid question! how do you know when you are ready for sex.  like i dont wanna have sex but i just wanna know how do you tell if your ready for it. its like im possible to tell it like its jsut a moment thing i guess. but its in the middle of the nigth an dim hanging with my bestie she talking to her bf. well i dont know what else to say but if you have a answer to my question plzz share it with me cause im liked mixed up with this whole thing