Some people (like myself) are not as comfortable expressing certain feelings, especially so early in the game. He may be this way and thats ok. I promise you if you hump him and whine at him about this he'll feel you are insulting him and his personality and he'll resent you. Some people just take some extra time to let down their guard and express themselves, hopefully that is the case with him, if not then you might have to find a man who enjoys being gushy right off the bat. I would just give him some more time.
So, so you think you can tell Heaven from Hell,
blue skies from pain.
Can you tell a green field from a cold steel rail?
A smile from a veil?
Do you think you can tell?
And did they get you to trade your heroes for ghosts?
Hot ashes for trees?
Hot air for a cool breeze?
Cold comfort for change?
And did you exchange a walk on part in the war for a lead role in a cage?