Maybe I'll generalize, but I hope this sounds right. One thing that may not have been explored is "expectation". Imagine someone, let's say the girl in the relationship, has had a sexual relationship with prior boyfriends that were 3x per week or more and now this defines her "need". Imagine then that prior relationships went south before the regularity dropped to 1x per week or less. The expectation is "all bf's should be 3x per week..." I agree the 2 minutes is not right but the # of incidents dropping is a sign of change in the nature of the relationship.

Now, current bf who she loves is dropping from expected regularity to 1x per week or less. Girl thinks that something is wrong. It's good to bring it out in the open to voice her wants and needs. By telling him, he can let her know what she's going through. However, her expectation of 3x/week may need tweaking. In longer-term relationships, sexual challenges occur and rate of sex drops. It rarely stays as active as it does in the beginning of relationships. Starting hot and heavy and dropping to a few per month or less is not rare. Medical, job and life changes affect how sexual relationships work. This is part of the reason some people like to date and change partners often - you get to start all over again, expectations met and needs found.

I love my wife and kids. I enjoy my family situation and 15 years of marriage. Having sex 1x a year now is about where we are at. Wife also had a hysterectomy as mentioned by another reply in this thread and doesn't seem to enjoy any type of physical relationship. Body chemistry changes tend to make big changes in our bodies. We just have to accept it or do something about it. There are medical studies that can be done for someone - you can get a hormone survey done to check for loss of tostesterone or estrogen and either change eating habits or take medicines to make things "more normal".

And as always - Love does not = Sex. Sex is a rush of body chemistry. Love is your soul reaching out to another.