Thank you all for the good information. It helps to get input from others that's why I posted was to get help. All the things I listed I am told are classic symptoms of bipolar and all were happening at the time he was going through the episode. Yes myself and others around him noticed he was acting different but we contributed it to the fact that he was trying to diet and lose weight. There is bipolar in the family but WE NEVER KNEW TO LOOK FOR IT IN HIM. Being unmedicated and undiagnosed, we had no clue to watch for any of the symptoms during the episode. We know now to watch for all the signs. The psychiatrist has told us from our information giving on his history that he has had bipolar for years and having hypomanias all along and yes the stimulant brought out a severe manic episode. Therefore the dr said he would have been diagnosed as Bipolar II in past but because his episode was mania he gave him diagnosis of Bipolar I. His bipolar twisted the facts around in his head and convinced him it was ok to be seeing her even though he knew to hide the phone and keep it secret from me. I even confronted him half way thru the affair and he denied doing anything wrong. (typical bipolar to lie to keep doing the pleasurable activity) Dr said he thought from husband's recount of event that he possibly actually lost touch with reality and he was living out the fantasy his mind had created. Also I gave a shortened version but here is some more of the story. He's having these crazy images go thru his head.

Here are some examples of the flight of ideas he's been having:

-saw our dead dog with crepe paper coming out of nose and ears
-saw a man walk into our bedroom and go to husband's night stand
-saw all kinds of numbers and letters in equations, zooming across really fast, the sigma sign in lots of them
-saw an antique movie like would play with the reel jumping, scratched screen etc. all in black and white except for a red antique car in the movie
-saw black spiders everywhere, walls ceiling floor thousands and thousands of spiders
-saw blue lots of blue
-saw blue again with a very bright light then a scaly serpentine creature came out of nowhere and it was very bright too
-saw some kind of spatula, spoon and fork all plastic made together where the fork slid out from the spoon somehow
-saw a demon flying in the sky and it swooped down on him and they slid all the way down a driveway with dirt rooting up until they came to a stop with demon sitting on top of him
-asked me what was a "chick boom" I told him I didn't know why, he didn't see anyone but heard someone say it--no one there
-saw a person's head, not body just the head figurine
-saw a wall with all sorts of designs and emblems and a dial to turn in the middle of wall

There are many more but these are just a few. Have you experienced any of this? Dr said it is different from racing thoughts that these are flight of ideas. This all sounds very psychotic to me. I've never experienced this. And when this all first happened and I caught him and the guilt set in (took him several months for fog to lift -still is coming around to old self) he was very suicidal and went to a GP and this doc told him it wasn't normal to think about suicide and hubby told him yeah everybody thinks about it. Dr said no I don't! I have to say I don't think about suicide nor have I ever cut myself. He has scars really bad on wrists, forearm and ankles(he started cutting there to hide so people would quit asking what happened). Something is definitely going on and it's more than just having a "normal affair".