My sister has been dating this guy for quite a while. She has recently been talking about marriage a lot and he appears to want the same, but not pushing for it. She is very hard working and is trying to save all her money for a down payment on a house or for a wedding. He works a full time minimal wage job, as his college degree is in "fine art". Unfortunately, he never actually does any art, or tries to bring in any extra cash. Last week he decided he wanted to rent the apartment above them so he could use it as "an art studio". This will add $420 dollars to there rent bringing there rent to $950 a month. My sister is totally upset by this since she will have no extra money to save. Plus she is anxious now all the time that there bills will start to be delinquent. He doesn't seem to care about her worries and is going ahead with this regardless of what she says. I really don't know what to tell her. She complains all the time that he is a child and just doesn't think clearly. What should I tell her to do??