Mom of 2, I have been out of pocket for awhile but have been catching up. I agree that you said what was on your heart and it is out there. His response was not negative.
You ask should you just leave it alone and "keep your mouth shut"... I would suggest definitely, just blow it off for now. Next conversation, just visit as usual. It will take pressure off him to respond. I believe he knows you meant it. He may need time to digest it even though I know he has known for sometime already. His actions seem to prove his feelings. It is as Tal said. My husband is one of those men who, if we are in a stressful time, he will do anything and everything around the house where as I want to "talk it out". He is not much of a talker and uncomfortable with that... Just relax as you have done so many times before and let this develop in its fullness. I would not mention this to him at this time... no. You and I are alike in many ways as we discussed early on in the posts. I just know a women (I am referring to me) can talk a subject to death!! LOL Too much talk sometmes takes the specialness (?) away from the subject at hand. (Not being critical of your thinking of what you might want to say to him, as I have that need to do the same! LOL Just trying to give best advice for now.)
Give it time. Best for you and for him right now. Any discussion would again, bring it up and probably make him feel he needs to respond. But you want it real when it happens. I think he will find a creative way of saying this to you very soon.
The fact that he has his children as much as he does, may make him a little less in a hurry to say the words, not knowing how fast that might lead in another direction.
Keep us posted. He seems considerate and loving. I think he will make it a special time when he does decide to say those words. You've come a long way Mom of 2 and I am so proud of you!! :)