A little insight please.

I am one of those cagey types, who has a bit of baggage. My BF on the other hand is very intune with his emotions and how he feels and communicates it well.

Problem that arises is that he doesn't feel that I open up enough with him. Sadly I open up with him more than I have anybody else, he doesn't see it that way as my huge steps are his baby ones.

How do I communicate to him sufficiently, showing him that what I am doing is huge for me, even if its doesn't appear that way to him.