Jay and Nick

Is Jay's and Nick's relation ship real or is Jay just using Nick. They first met when Jay invited Nick to a party of his and then Nick and Jay started talking about the war that they were both in together. But Nick did not know that he was talking to Jay but Jay knew he was talking to Nick. Jay later says that he just found out that Nick was Daisy's cousin and that he want Nick to help him and Daisy get back together. Jay also says he learned this from Jordan but did he really learned that or did he already know that Nick was Daisy's cousin. Then Jay tries to convince Nick to help him by being really nice to him and it seems like Jay really treats Nick as a close friend. Jay takes Nick out to all these place and even asks him if he is interested in some business thing but Nick refuses. But does Jay really feel that Nick is his friend or is he just using Nick to get close to Daisy and once he  and Daisy are back together would he just not think of Nick as a friend anymore and forget about Nick.