Hi, I'd like to help you with your question.
It sounds like your boyfriend is afraid that if your relationship continues, he will be obligated to propose. Has there been talk about marriage between you both? If so, that may be what made him feel he needs space.
You can react in a couple of ways to this. One, you can back off and let him have space. Find something to do on the weekends he is not with you. Develop new friendships, start a hobby, or travel. Whatever keeps you busy.
Two, you can tell him that you want more out of your relationship. Tell him that you are unhappy with how it is and you want to find a solution together. Then talk it out. If he refuses to do this, you will need to decide if you want to stay in the relationship.
Three, you can suggest counseling. He may benefit in particular if he is fearful of commitment. Talk with your doctor about a referral. Or, if you attend church, talk with your pastor. You can also search on line at http://therapists.psychologytoday.com/rms/.
It does sound like the two of you are compatible. This may just be a matter of his feelings about being married. If he was hurt before, then that may explain it. But if he has never been married, he may have a life long fear of committing. Therapy can help him overcome his feelings and continue with your relationship.
I hope this helps,