**Haven't read all replies**
I have a high libido, and DF has what would be considered a low libido due to his job demands and his stress levels. We still have s3x, about once a week to once a fortnight (both could be normal for us, dependant on his shifts etc).
Would I consider an open relationship because of this? Nope. I am happy to have sex with only him, when he is in the mood for it. Sometimes his libido goes high, sometimes it is non-existent. I'm patient and for me a huge part of sex is the connection and trust between us, it's the love.