SD...Ugh. I'm sorry hun. I think you have a good attitude about it...however I'll add this. What do YOU choose to do?
Your husband is lying to you...again. He's going behind your back to talk to a woman and he knows this would hurt youi. Not acceptable behavior IMHO. Sometimes I think in the DB world we can become a little too accepting of bad behavior.
Obviously I would say take your time, think it through, etc. But I'm doubtful that ignoring this is the right decision.