Go on several dates, and stay within the 'kissing, holding hands, hugging' zone until your feelings develop even further and you're comfortable with him. Get to know him more by spending time talking to him. Text if you can. Just don't overdo it. You shouldn't be the one that always texts and calls you. He should reciprocate and initiate conversations.

Be flirty and have fun. Since this is so early in the relationship there is no guarantee it will last but it is worth a try, right?

If he really likes you like you say, he will be fine with taking his time to get to know you better. Neither of you guys are the exact same person that you were in high school and people change the most throughout their 20's.