Verbal abuse? How do I stop this?

My boyfriend is the sweetest guy I have ever met. The problem is he keeps things from me until he eventually has a meltdown. We have talked about this over and over again, me telling him he can tell me things, anything, just don't keep it from me. Yesterday I made a birthday cake for him and a party, spent a week planning it.and when he arrived he looked miserable, I didn't even get a smile. He wouldn't tell me why, he just kept on saying he loved it, he doesn't know what I am talking about. Then last night he admitted that he knew I was doing a surprise thing for him and he felt like crap about his life(careerwise) that day, and didn't want to tell me. So I went that entire day feeling sad because I thought he hated what I did. I broke up with him for not caring about my feelings and only his own. Then today I got back together because I love him and I just want him to tell me things. Found out his dad verbally abused his mom for years, and I'm afraid my boyfriend might start, if this isn't it already. Situations like this have happened over and over again, and it doesn't matter what I say.