Hi and Welcome to SR, maybe time to try and set up some boundaries. Not sure how u going to avoid 'him', rather tell him nicely, you don't mind being there and doing small things for him, but you need your space and are not looking for serious friendships right now. If he still continues, then tell him, he has not respected your wishes and say you are sorry, but you can't continue to help him. Hope something comes right for you. Keep posting.