Single mommas help

My husband & I, decided to get a divorce after two years.

We have a 7 month old son together.

We’re both in our early/mid 20’s.

He’s definitely a partner and drinker, and before us, he slept with everyone.

I’m having a hard time thinking that this is going to happen again, and I’m not sure how to deal with it.

I know I have to put my emotions aside for our son!

We’re definitely co parenting.

I just need help with my emotions on my son leaving for three days out of the week without me,

And then my soon to be ex husband, being with other women...

I truly love him, but our marriage, just can’t be fixed.

Please no rude comments.

Just want advice on how to get over all of this, as I am a super emotional person!!