Leaving them and then letting them see you being happy with someone else.
Good idea
The best revenge is to leave them once they realize what had with you they come crawling back begging for your forgiveness although it would be to late then there is no coming back from that. You can’t trust a sneaky snake that’s what I call a cheater and because that is what they do swizzle around slow and intentional waiting for their next prey. Yeah the best answer is to just leave them in the dust.

Best decision