I know this whole thing suks and it especially suks when there is OP involved.
Personally, I tried to channel my frustration, hurt and anger into motivation. When I would workout, I'd picture my W's boyfriend's face when I was punching or kicking. When I went to the driving range, I'd pretend that the golf ball was his face.
I know it isn't "DB'ing". I suppose it helped me GAL.
After a certain point, it didn't matter to me what my W was doing. I embraced being single and lived my life accordingly. By the facts in front of me.
Me:45 ExW:48 M:04/97 3 Bombs & 2 ReCons 1st BD 11/10 D Finalized 4/20 D-16 S-14 Going in one more round when you don't think you can. That's what makes all the difference in life.~Rocky Balboa