My son's father remarried and i just found out theough facebook. What should I do about this?

[Sophie]

He is remarried, so there is absolutely nothing you can do but move on. What caused your break up in the first place?
I've been with my husband for 7 yrs, 10 weeks ago had our first baby and the day after we brought our baby home he said he couldn't do this anymore and left us.
He had been livin it up for 10 weeks and although he denies an affair I know the scrag he is "just friends with" is more than that.
You need to pick yourself up and be a strong supportive mum to your child. Please move on and start a new life just as your ex has.
Take care and be strong.