being a introvert is not easy people thinks we are some type of person
who don't know how to talk but actually introvert know how to talk it's just they don't know how to express those words
introvert suffer too much they think one thing which they want to say over and over again before making it come out of there mouth in just split few seconds
they thought every possibility of saying those words to person they want to speak
Introvert are too sensitive over things so they don't trust or make friends that fast, they take time or pace before getting comfortable with anyone, time period varies sometime days, months or year maybe but when they start to trust person, friendship is what they can do best
So please understand before saying anything bad about any Introvert because even he silent what if he/she fighting inside