When is your due date?
It's funny, I just had the thought, your husband has a new loved one now, but soon, so will you! The delightful little baby. Consider now discussing how much you will need him in the early weeks and months of the baby's life. Those are trying times and it's much easier with your partner around at bedtime! He should discuss that with the gf too, prepare her for him being needed at home to take care of his child and post partum wife.
Personally, I think you're well within your rights to have h just spend one night a week with the new gf. Until he agrees to have more hangout time with both of you, at least! You should feel less competitive as you get to know her better, know she's just human like you, not "better than."
Love withers under constraint; its very essence is liberty. It is compatible neither with envy, jealousy or fear. It is there most pure, perfect and unlimited when its votaries live in confidence, equality and unreserve. -- Shelley
A standing prick hath no conscience. --Bill Shakespeare
Mags, female, pansexual, 60, loving and living with
miss pixi, female, pansexual, poly, 38
Artist, 57, female lover
Darkwing, 45, male lover
Nick, 35, male lover