Myself (26M) and my girlfriend (26F) have been together almost 10 years and we get along great. We have been living together for 3 years, we love each others company and our future goals align quite well.

The problem is that our passion has faded.

A few years ago we decided to experiment with another another person.. this lead to many threesomes and couples joining which was great and we both seemed to really enjoy but recently she has seemed fair less keen to continue with this and I am still encouraging this as it's a real turn on for to see her with another person (guy or girl).

I am really attracted to her but the fact that she isn't as interested in this sort of play as she used to be is quite a turn off and has killed our sexual energy and I am not sure what to do about it.