I still have sex with H, not regularly, but on occasion and yes, I feel used. He is the one who had the EA, I am 90% sure I believe him that it wasn't physical so I am not worried about stds.
I only do it for the physical release, try to shut my brain off, I have mixed feelings about this as I have a healthy sex drive and find it very hard to go without for long periods of time. My H does not pressure me at all, in fact I think he could go without and be fine that way.