Dear Kim V - I know from experience - the more you make a big deal out of this girl, the more your son will want to defy your demands  You are going to just have to let it play out.  He, hopefully, is smart enough to figure it out for himself.  You can't help because it is in his head and heart, what he wants to do here.  All you can do is pray that what you have taught him about life will influence him in making a sound decision.  You and I know that there are those kinds of girls out there but he is smitten with her at the moment and Mom's can no nothing but wait and pray.  Wish I could help you more but if it is not her, it might be some other girl.  Maybe he will wait!  I know what you are going thru but remember, you can go home and cut off the funds to him but you are still his MOM and you still worry for his welfare.  Been there!  Somehow - it usually works out.  Not much help huh? In my case my son got tired of her and moved on and I just breathed a sigh of relief.

As much as we do not want our children to grow up, they do.  He is an adult, and my advise is the same as what I do myself.  Same as you are here on this planet for a purpose, so is he, and you have to allow others the same freedom of choice as you like. He has chosen his path, and you have to allow choices to play out.  Not to say you cannot tell him what you think...certainly tell him, and leave it open for him to come to you for help, then let it go, for continuing to try to intercede creates problems too, like resentment and lack of respect.   You may certainly pray for him, but do not pray for what you want for him, but rather for the highest and best for him, without judgement of what that is.