Withdrawing Himself
It is vital to know whether or not your partner is holding back and refusing to let you in. It might be anything from a lack of interest in meeting your friends to a lack of concern for their opinions, indicating that he does not want to combine his life with yours.
There are often subtle signals that a guy is not giving you much, such as a refusal to meet your family or an invitation to meet him. There is usually no good reason for this, and you do not want to spend your life with someone like that.