One of the questions a few people have asked is:
“How can I get him to buy a house with me?”
I am a huge fan of HGTV’s shows, especially House Hunters, and it seems the number one reason men buy houses is kids. If you give him a good reason to buy a house, like a kid or hopes of kids and his own family, there is a higher probability he will buy a house with (or for) you.
Another reason he will buy a house or apartment is a love nest situation, ie he wants to keep a mistress in an apartment, but that is probably a lot more rare.
How to Make a Man Spend Money on You 