It sounds to me that your convenient and you might fill in as a mother. What I mean by that is you might end up doing all the washing, cooking, house cleaning and folding clothes. About saying I love you sounds as though he's not going to say it unless put between a rock and a hard place. My answer would probably be different if you would have said that we are planning on moving into our own place. Because then you would have maybe an extra bathroom so your single bathroom wouldn't be so cluttered and will not be on top of one another while in there , are an extra room so you could get away and be by yourself. But then again like my good buddy my mom would say do what you feel is right even if it turns out wrong at least you did what you feel is right and not what somebody else thought you should do. What did I just say that? Have fun whatever you do good luck.
It's ok but make sure he understands ground rules. How you plan to share bills, household tasks and guests. If he is moving into a house you own make sure you know your states views on common law marriage. Some states recognize living together after a few years common law. Simply meaning if things end you could be forced to share all assets 50-50. If that is the case and you want to protect all that you own get him to sign papers and notarize it.
Why tie yourself to someone who doesn't love you or wants to be in a committed relationship. It's not even a good idea to be roommates because it takes you out of seeking a healthy, enduring relationship.