Glad to help.
The dye in dark clothes usually bleeds for about the first 5 washes and from then on it's OK to wash them together. A good test if you aren't sure
is to soak them in the sink for a bit and then wring it out. If the dye doesn't bleed into the water, you're safe.
It is a waste of water to make a load for only 3 shirts.
[edit on 19-8-2008 by Duzey]