From experience, it's not an issue. In fact it actually helped me secure an offer, since through her recommendation I got an interview and then thereafter it was down to the individual. There are so many couples in consulting firms, so why would this be an issue. In the end I decide to opt for a different firm, given the likelihood of constant arguments etc. Also she would've been my boss! Again! We met when we were at a previous consulting firm! This is why we should get out more and meet other people. Then again, when you're still in the office at 8:30pm on a Fri its no wonder that you don't meet other people! Time to head off to the pub!