He says he needs space

Then give him alittle space. Even if you love him you gatta let him have time of his own. In a puppy love relationship to one with marriage you always gatta get away from each other some times. Just show him how much you love him and how much he means to you. Comment to him with sweet saying and do things he enjoys doing. Show him he truly has your heart and he wont leave you. =) <3