So me and my boyfriend broke up when he lost his job?

as a stock broker and couldn't find another one, since he had to pay his ex wife alimony and they still share the house 50/50 he moved back in with her, he says there only friends and she does have a boyfriend, he wants to remain friends with me as he told me that I a great person that he wants in his life....so he is now living there, should i believe they are only friends