Thanks for the responses. In a long term relationship, like a marriage people change over time...have kids, etc...and you may not look like you did at the beginning of the relationship... A person may no longer be attracted to that person ...

Also if u r a religious person... Many believe it is your duty to have sex with your spouse no matter what...

So if the person wants sex than they r stuck with a person no longer attracted to and the unattractive person is obligated to comply...

Sex is sometimes just sex right?