<human>: We have always had an active sex life. We've been together 6 years and I would say regularly we were having sex at least twice a week if not more. But lately maybe for the past six months his sex drive with me has dwindled considerably. But not his over all sex drive. I know he watches porn and jacks off which has never bothered me. 

Except that recently, he has chosen it over me. I have tried everything I can think of to get him in the mood, but nothing works. He will say he's too tired from work, yet will stay up later than I will just so he can jerk off. He even wakes up early to do it on his of days. 

I admit that after the birth of our son, I gains weight and have had trouble losing it. I'm going to the gym everyday now to try to feel sexy again for him even though my confidence is seriously diminishing. I've openly talked to him about it but he says he's still very much attracted to me. So why won't he show it? And why does he go out of his way to avoid sex with me? I'm so upset about this because it's such a sudden problem. It has to be me.

Could you distill the essence of the text into 1-3 sentences?
<bot>: husband goes out of his way to avoid sex and to jerk off even though I'm always willing to do anything with him.