When I feel this way, it's because I'm not comfortable enough with that person, I feel they'll judge me, or I am embarrassed about what's bothering me.
maybe HE is what is bothering you ?
You still have trust issues with this person
Him who and what's bothering you? spit it out
have courage and dont think about the result..
just go for it.. and say what u wanna to say
maybe you are not yet ready. Your scared that he will not understand you.
Because you're doubting yourself.
If you want the relationship to work out, talk it out. You both do not deserved to get hurt.
Something is stopping you.