You've said he's just come off of probation for the same thing, was that the same offence against you?
I think you know you've done the right thing Will. Have police signposted you to your local domestic abuse support agency, if you have one? If not, you could try calling the National Domestic Violence Helpline (Women's Aid) a call on - 0808 2000 247
You can call them even if you've been signposted, they are good to talk to.
As for SS, the best thing you can do now is work with them, they can support you to leave him. I know that that's probably not what you want to do but I do think you know that it's the best thing for you and DC. Have SS had much involvement up until this point?
That you've said you're preparing for him to turn nasty speaks volumes Will.
Attached is the cycle of abuse diagram which shows a pattern you may recognise. At this point in time the cycle has been wobbled because now there is police involvement, so he is likely to be thinking what he can try to regain control - begging, pleading, promises to change, threats to harm you, the DC or himself, gaslighting and manipulating, whatever he feels will work to get that cycle back on track.
I'm sorry Will, but he likely doesn't love you. If he did he wouldn't abuse you.
You don't just stop loving someone, it takes time. Coming out of abuse is a healing process, and you do grieve. And that's perfectly normal. You're doing so well even if you don't feel like it 