Before you risk hurting your reputation at work, find out if this person is someone you'd want to spend weekends with. People either don't care, will think it's obnoxious or inappropriate, or will get jealous. Once you have a sense that this might have a future, talk to your partner and decide how and when you want to disclose your relationships to your colleagues.
If the rumor mill goes into high gear, that might be the right time.
So ask yourself, if you were on your deathbed, would you whisper to your closest friend, “Now that I look back on my life, I wish I worked more 12-hour-days.” If so, keep doing what you’re doing. I went out with over 300 people over 15 years before getting married. But to think that you’re going to find a relationship when you go on two dates a year? Maybe you’ll get lucky and fall in love on your twentieth date.
If not, it’s time to get a career that doesn’t require such slavish devotion. But at 2 dates a year, my friend, that won’t happen until 2018.
I’m a 33 year old, single father with primary care of a 14 month old daughter. Make no mistake about it: being busy is the greatest and most believable excuse for being single that you can find.