How do i tell my boyfriend he is taking things to fast and that i want to slow down?

Just tell him that you want to be with him, but you want to take things a little slower. If he loves you then he will stay with you and not force you to do anything you want to do. If he is still taking things faster then you want, or forcing you to do things that you don't want to do then end it. Find someone who will respect your wishes to take things slow.