Hi Shirley...have you asked him why? If you haven't been dating very long he may want to wait a little bit longer before introducing you to his parents. If he'd rather do other things on the weekend than see you and you've let him know how you feel about it, you can always look for someone else who wants to spend time with you on the weekends.

You don't have to stay with this boyfriend if you're not happy about how things are going. Especially if you've trying talking to him about how you feel.