Hello, I am used to OR I was used to you ,, whether in the present or the past , it indicates doing something as a regular habit ,being accustomed to do this thing on a regular basis .

"I used to do sth." (in the past- I don´t do it any more) "I´m used to doing sth" (I always do it and it´s easy for me to do it) "I got used to doing sth" (I always do it now but it caused me trouble at first)

I used to like to eat spicy food but now it gives me heartburn. I'm not getting used to chpr1 being so mean to me all the time.