text: You can think but I do not think it is a good idea to act on being with another woman.  It sounds like your energy levels are very different and that is natural...\nI have two very dear friends, married who have two very different energy levels...he is much more physically active than she is but they get along great and have been married for 14 years.  His job is in computers so the job part is not that active but once he gets off from work he is very much into mountain biking, hiking and any very physical activity...if the weather is not good then he goes to the gym.  They make it work because they love each other and are committed to the relationship.  He is one of the most considerate, devoted people I have ever seen...and she is just as devoted to him...they do things together biking and such but her level will never be up to his...\nI guess it depends on what you ultimately want out of life...things will settle down when your child gets a little older.  Til then talk to your wife about your concerns but take into consideration what is going on in her life...tell her how much you appreciate all she does...compliment her on her appearance...arrange to go away on a romantic weekend sometime...send her flowers...remember foreplay begins outside the bedroom...good luck!