If I don’t tell him I love him multiple times a day or send him messages during the day when we are both at work he thinks I’m too busy to care.
This is not a description of love or insecurity; it's a description of abuse. Coercive control, which is a crime. A crime that carries a prison sentence. (The same applies to other parts of your post, I've only picked one for simplicity).
after having been with so many men who treated me like shit I felt glad to find someone who seemed to worship the ground I walk on
It's completely understandable, but you have fallen into the same trap as many women exiting abusive relationships do if they haven't had support to unstandardised the dynamics that drive abuse (the need to have control of you): you compared the next man to the previous and concluded that because he was different he must not be abusive, when actually he was just differently abusive.
I think you need to get yourself on the Freedom Programme sharpish to help you understand what is going on here and the damage it is doing to your children - and how they will heal if you get them out of this situation and protect them.
Www.freedomprogramme.co.uk - it's information, not therapy.
Women's Aid 0808 2000 247
Do not go to joint counselling with this man, it is never recommended where there is abuse.
You might also find it informative to google "love bombing" and "trauma bonding".