Okay first off...I know the title is long so what but look ere
The real reason this happens
Her: *sighs*
You: what's wrong honey?
Her: nothing.
You: are you sure?
Her:yeah it doesn't matter anyway
You: *sigh*
It's because everybody is naturally a klutz. Guys can laugh it off girls are always under so much pressure they just don't want to feel stupid they want to know you care so just always show her you care and when she puts on a front be consistent because she doesn't want to tell you if you wont care.
The worst thing to do to a girl is make her feel stupid. This is a big piece of you why cheating makes her so angry because when you cheat it makes her feel like you don't love her because come on who cheats on someone they really love?
From there she gets mad about the fact that she believed you loved her and she feels stupid for believing it...In other words just don't make her feel stupid and she'll open up to you soon enough
*helpful hint: being funny comes in handy here. Make her laugh+ show her you care= successful capturing of your true loves heart.