Whether or not you want to risk your heart is a choice for you to make, but nothing can ever be gained without an element of risk. Whomever you're with, whether it is this guy or someone else, you must risk heartbreak if you wish to have a real relationship, because a real relationship involves and open and loving heart. And open and loving hearts are vulnerable to being hurt. But vulnerability is the price you pay for love.
In any case, you don't have to make yourself completely vulnerable to him from the outset. Be cautious with your heart, but it doesn't take much vulnerability to give him a call and tell him that you had a nice evening too.
[SIGPIC][/SIGPIC]Moderation in all things, including moderation.