My heart goes out to you on this. TBH, I also don't think anyone I know wants to hear whatever issues I have. I get the "you can talk to me about anything" or "it's OK if you cry, you can come to me" but usually when people say that they don't mean it. They don't wanna be the person who will help you out; they just say that and then turn on you when you do cry or vent. Or they scold you/give careless advice. And that's why bottling up is a thing. 

I wish we knew the solution to this issue...