He did that to unsettle you and confuse you, which puts him in control. He will fight to keep you, and he will be constantly trying out different things to find the one that gets you back in your box where you belong, and dancing attendance on him.
He might suddenly develop a serious heart condition, or cancer, or something unspecified which will keep you hanging on waiting, because you can't possibly end the relationship when everything's so up in the air with his health.......
He will bring you flowers, chocolates, he'll be charming, helpful, angry, threatening, distraught, whatever works. Mark this: IT IS NOT REAL? None of it.
Turn and face your freedom. Keep walking on that direction and don't look at his antics at all, don't be distracted by his dancing at roadside, but walk right by him, eyes fixed on the real goal ahead of you.