If he is getting financial help from you in any way that is reason enough for him to keep going to IOP. He knows he can't make it on his own and will the things he needs to do to keep you where he wants you to be, namely helping him. If you think he is using, the only thing that you can do is stop helping him. Set some boundaries around the things that you will and will not do for him and then get out of the way. As others have said he will get caught eventually. Hugs, Marle