Call someone dude(tte). The worst thing you can do if you ever want to feel right or good again is end it.
Also, you don't realize how many people you'll be hurting even more than you are hurting now. Don't do that to them, and don't be that person. This stranger on the internet thinks you can do it. You're already smart enough to say something instead of doing anything rash. Keep going in that direction, it's good!