@mike6500,
Honestly?
I think that 1) this is definately going to be emotional for him but even worse if he establishes that there is another man in the house most days, regardless of how much time you spend there, that he was kicked out for another man, think about how you would feel... Don't think for one moment by staying out of the public eye that he will not find out... I am pretty sure you drove past (his) house several times noting her car, if you recall...
Now you know it's for real, thus far... how about taking it easy for a month. Let him at least go through some form of loss in an
honourable way... I am not saying, not to see each other but don't look at it as I get to stay there Mon, Wed, Frid and maybe sometimes during the days on Saturday..
I think some morals should be at play here.
2) There is a baby, the baby sees one man go, her/his Daddy and then another man there all the time... No matter what age an infant is, they take everything in and I don't think it's a good example, the guys stuff isn't even out of the house yet.
Be Adults about this.. Is what I am suggesting.