Well i can tell you it won't be over night, in one week or one month. it takes time to get to know a person and even then you are still learning. Don't rush into any relationship. don't be so eager to fall in love you might be in love all by yourself.
The best thing you can do is take your time to get to know the person don't reveal everything about yourself in one conversation ( women do this) let them talk about themselves. Turst is important, and there is not any room for i'm sorry in the beginning or lying. You will know and he will know too, The knowing will not be one sided and if it is move on.