Read Zinco's replies and he was very balanced and fair handed in his approach. I personally am on the opposite spectrum... I am a bloke, married and have no interest in sex... as my depression has been a long term issue sex has been a non issue pretty much from the start.

My wife has made no demands on this... she does want children and that is a hurdle we're going to have to broach at some point... and thankfully I am currently getting the help, therapy and medication that is pulling me in the right direction. As such I'm going to tone down what was initially going to be a pretty harsh reply

At first I was outright horrified at this comment, it came across as both highly ignorant to what depression does and was setting demands that appeared uncompromising as well as a little cruel: i.e. give me sex and then I'll consider giving you emotional support for something that is an illness and beyond your control.

But, as mentioned and I think Zinco put it well when he said: "Yes but you mention that she has severe depression and sleeps 16 hours a day. Severe depression is a huge factor for her and for the relationship. It is not a typical relationship. You will have to decide if you can live with how it effects things."

Amongst other helpful comments that as I've said were fair handed. You need to seriously consider what you want out of this relationship and also what you are prepared to give... mental health is debilitating not just to the sufferer of but also to those close to the one going through it. So, if you are unable to handle that responsibility and commitment (that in the long run could be very rewarding and lead to a healthy relationship)... then seriously consider where you stand... don't let things fester or continue for the sake of appearances... either commit or let her go (preferably gently).