I've slept with him & now i feel confused?

Well firstly, you have no reason to feel slutty for sleeping with a guy, its just natural, depending on what age you are? But its quite a hard one to judge, depending on what he is like as a person he could want either one. But the only way of finding out is asking him. So just text him and ask him if he is looking for something. Or ask him if he likes your friend. There is no reason why yous can't be together