by matthew_dixon » Wed Apr 11, 2012 11:38 am
Personally, I'd say the most important thing in a relationship is honesty. Therefore, if you're thinking any of them are becoming serious, they really need to know about the other ones existing... if you're wanting the other ones to exist.
I would never get into your situation myself - I found myself in a situation coming close to it recently actually (was due to meet a girl from a dating website, but got into a relationship with someone else just two days earlier - my first priority as SOON as I got into the relationship was to contact the girl on the dating website and explain that I would no longer be meeting her.)
If you try and keep living a lie to the three of them, it will only end badly - at very least for one or more of them, if not for yourself.