I agree, don't beat yourself up about it. The day my H confessed, as soon as I calmed down, I was ripping his clothes off. I beat myself up about it until I realized why I did it! I needed the connection with him AND I needed to feel like I had control,like somehow sex with me this one time would wipe out his memory of sex with her.
What I learned is...We all deal with this shit differently so don't beat yourself up about the way you deal with it!