He will probably become very clingy and want to do all kinds of endearing things for you. Even though this is the last thing you probably want it is a natural reaction so try to be understanding. This behavoir will pass in time. Whatever you do do not talk to another man about this as this intimate conversation will lead to something more down the road. This is what my wife did and became emotionally involved with a co-worker.
Emotional affairs are very hard to break.
One more word of advice, most men in the beginning of a relationship are easy to talk to and are attentive and understanding which is what you need right now, but the grass is never greener on the other side. Once the in-love stage of the relationship wears off than the conflict stage comes in and you end up doing the same things in the new relationship.