You are a wife material already but you don’t have to overdo or try too much to impress him by going to his house and start doing domestic chores upandan.
You cook
You wash
You clean
Etc.
Know your limits as a girlfriend abeg.
If he gets too much from you just as he would when he decide to make you his wife then he won’t propose to you, cos you are already doing what a wife should do. So he may have no need to ask you to be his wife.
Guess what !!!
He will keep u as his girlfriend for years without thinking about marriage.