You don't have to be totally alone, but a little privacy is ideal.
Numbers 3 and 4 during early.
You can give him a quick peck after he says something sweet, or move in slow and prolong the kiss for a few seconds to show him that you're feeling romantic.
Can you tell if a guy likes kissing you? If you are a guy and you are a virgin, then you just won't have the practical experience to be able to deal with a lot of these issues.