We can lie to ourselves anyway we want to, once it's over, to make it bearable... after all, it's now OUR story, 1-sided, no alternate versions wandering around like a tongue-flapping loose end to be tied and clipped, so yeah.... Remember it the least painful way, make it a "bearable" story and move on from there.
After all, relationships (after the break-up) are always open to re-interpretation and emotional editing. ie, oh, you don't want me to write that you were an uncaring, unfeeling [censored]-ass lay? My bad, but that is EXACTLY how I remember you, so... that's my story, I'm sticking to it. You remember yours how you want, and get far enough away to run your own version. Leave mine the hell alone.