Relationship advice?!??!?

Me and my bf have been dating for a week now. we went to hs together but only started hanging out about a month ago. the other day we were walking in the park and he asked me what I want out of our relationship. I told him I didnt know he replies that he wants a serious relationship with me and hopes I feel the same way about him (which I do) but said he wants us to take it slow. I dont understand what he means by all of this, we've both been hurt alot in previous relationships but can open up to each other perfectly fine. He treats me wonderfully and makes me very happy and he says I make him happy to, yet im not quite sure what his true intentions are with me. please help me figure something out or what questions I can ask him without hurting him :) thank you!