Why is it so difficult for me to look people in the eyes?

I seriously feel like I am 6 again and if someone looks in my eyes for long enough I'll melt.

Or something.

It's really hard to keep eye contact with anyone lately. Like months now's 'lately'. It's weird, I feel... shy.. Like, embarrassed or something. I don't understand it though. I don't feel I have anything to be embarrassed over....

It's not personal, okay? I really want to look into your eyes, but my brain is fighting against me.