What do it mean when your boyfriend squeezes your neck hard/little choking?

i was hanging with my boyfriend last night he controlling and violent he in a gang and a cancer we was sitting down on the bench he just grab my neck hard squeezing it he was strong too...now my neck hurt...is he abusive if so why did he do that to me and he press on my ribs hard
What do it mean when your boyfriend squeezes your neck hard/little choking?
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