Why won't he ever open up to me?

I dated this guy for about 9 months and fell in LOVE with him like crazy. He had some trouble in his past with his parents and ex-fiance, yes fiance, and just won't open up to me at all. I've tried everything possible, by opening up to him first, making him feel 100% comfortable around me, keeping... Show More

Also, why is is that he is more open with complimenting or being sweet to me now that we are on break, for example, he tells me more now that I'm beautiful, hot, and have wonderful boobs, and gorgeous eyes, and is amazing, etc... but when we were together
these words rarely came out of his mouth?