Re: Is she sleeping around?
Do not think of your wife right now.
Focus on you.
Lose the weight. I have personally lost over 40lbs in the past 6 months.
Fix the ED. I was diagnosed with diabetes. It has put a cramp on the loving. Diet, exercise, weight loss works wonders. Have the Dr. give you some viagra but not until you do the other 3 items listed first.
I guarantee you that some self improvement will not go unnoticed by your wife. Mine has noticed big time and we have a very healthy marriage. I have 3 teenage daughters in the house too so I know the feeling my man about alone time.
Fix you first. Show your wife that you want the benefits of the marriage through your actions, not words.
I guarantee you she will notice and come along for the ride.