Does your son live with you full time right now? If so, do not move in with anyone that you're not sure about. It has nothing to do with whether you love this man or eventually do want to move in together, but I don't think either you or your son can deal with the upheaval if it does not work out. Listen to your gut, it's telling you something. I think it would be emotionally easier to deal with having to go to a food bank for a while longer than to put yourself and him into a situation that could cause you an incredible amount of stress and anxiety.