I had relapsed, but midway through I stopped after realizing what I was doing. Is it better to simply finish or throw the porn out of the window?
Chuck it out the window! Numerous times have I been close to the edge and then pulled away, and I ALWAYS feel much better than if I just go ahead and MO while watching P. Yeah, you might have blue balls for a little while and have a restless night of sleep, but the next day you'll be able to look at yourself in the mirror and say "hey, we beat it this time. Next time let's not even open the window."
I've fallen into the concept that if you partially fail, you might as well fail totally. It is useless thinking,a partial win is better than total loss.
This is called edging and has been proven to be worse than fully PMOing, but I am not advocating just going through with it and instead presenting a fact so that you will stop doing more damage and quit cold turkey like you must.
It's better to stop. If you have any mental clarity at all during the act, you should stop. It will do less damage to your brain. Full on PMO is much worse (ie way bigger dopamine release) than M'ing for a few minutes and stopping. Of course, if you're edging for hours, full-on quick PMO is much better than that. But in all other cases, STOP.