What to do can only be left to you, but advice when asked for can indeed be a guidance we all need at times. So my advice would be to allow your self the ability to express how you truly feel. If this other person does not want to commit then you need to decide if you are wlling to be friends with benefits or do you really want something more. if it is the latter then my suggestion is to stop seeing this person all together. If it is the former then you have no problem. But you must ask yourself and answer honestly is this what I want. What do I see for my future with this person and how does this person respond to my hopes for us in the future. Above all else do not let someone use you. If you want to continue to be friends with benefits thats fine, but remember that it was your choice and do not try to make this person commit to you. If you are ready for commitment and they are not you need to move on.
Best of luck in whatever decision you make.
Dee
