What you need to do first is type him an email back apologizing if he got the wrong ideal about you and then go on to tell him exactly how you feel about him. It could stem from your bad relationship and you being afraid to get your heart broken again and if that is the case then it's time to own up to that before you lose him for good. Make the email as long as you need it to be to explain how you feel and everything you went through in that bad relationship and that you are just uncomfortable because you haven't had a man care about you in that way for long that it's going to take some time to get used to it and then ask him to be patient with you and that you want to have everything with him. After typing the email then tell him you are willing to give him the time he needs but that you want a lasting and loving relationship with him. Then I would give him at least a week to think about things unless he contacts you within that week then after the week I would call him to see how things are and ask if he needs more time. The email will give him food for thought in the meantime.