Leaving a toxic relationship can be incredibly difficult for a multitude of reasons. First off, abusive and toxic people are master manipulators who try love bomb and get in your head before you can easily leave the situation. Secondly, if a partner is full-on physically abusive, ending a relationship can pose a greater threat to your safety than staying (although it's a catch-22 since neither is safe).
Since abusers tend to be master charmers at first, the switch from a seemingly smitten lover to a deeply broken and dangerous partner can be swift and jarring. In many cases, the red flags are difficult to spot if you haven't lived through it.
"We were actually engaged to be married. Then she went on holidays without me and came back pregnant. She then told me "you have never done anything to prove you really love me...accept this baby and help me raise it to prove it"