My DP and I have been together for 3 years, both in our early 30s with no kids and moved in together this year.
He's really stressed at work at the moment - huge amount of responsibility, low amount of reward etc. He's currently waiting on a job offer that will hopefully improve everything (right part of the country, right progression and exactly the company he wants to work for!) so we're both biding our time on that I suppose.
The issue is that he never seems to want to have sex at the moment. It went from every night we spent together, down to every few nights (maybe 2 or 3 times a week) down to once a week (much to my dismay) and now it's been 2 weeks since we last had sex. He said when he was drunk a month or so ago that its stress related, but he's shy when it comes to things like this so I find it difficult to tackle. It's also not a deal breaker for me at all if it's temporary, but I just want to know where his heads at! I've tried going to bed in lovely underwear, initiating every few days but get nowhere 
The last time we had sex was pretty...unromantic? I didn't end up feeling massively fulfilled after waiting a week for it!
I don't want to make him uncomfortable or give the impression I'm hugely unhappy, but I don't want to have sex once a fortnight! How would you guys approach this?