temporary marriage

Dear scholars, As-Salamu `alaykum. I am a student in the USA. I was looking for a Muslim wife but could not find a potential one that can be with me now. I have to stay here another three years to complete my PhD degree. It is almost impossible for me to wait this long. I am already unable to focus on my studies, both Islamic and professional, because I am thinking about getting married. At this point I start thinking about having a temporary relation with an American student! I really need your advice in this matter. It is really difficult for me to make this kind of decision.