How do you know when to sleep with a girl?

Answer 1

there is all these subtle hints which she will show, always pay attention to the little details. like her moving closer to you. stroking your left, allowing you to touch her. and if she never has had sex before then she will most likely tell you when she is ready.

Answer 2

She'll remember small details from your conversations, she'll always happen to be close to you. If she never ignores you when you call or text.

Answer 3

You will know when the time comes.