Difficulty of being Open

I'm actually  married and yet, I'm having this difficulty of being open to my partner. When it comes to money, I'm not remitting my salary to him unlike him, he's remitting it to me for family use. When it comes to emotions, he is more vocal in a way that he's telling me that he loves me so much..that he's lucky to have me..but, I can't say those words to him- but I love him so much and I just assume he knows it. Also, when it comes to planning our future, he would really tell what he wants- the type of house, the number of kids, the kind of investments we will have. I do admire him because of this, but I'm having troubles with myself why can't I be open like him. Anyone experiencing this? I badly need opinions..