I am so grateful for all your opinions. I have discussed it with him and he said he knows hes acted in a manipulative way. I told him he was almost abusing the kids and he was horrified. He has moved out and now I can have the space that I need to sort my head out. I do love him and his behaviour has become worse through frustration in not being able to sort things.
If only he'd thought of all this before. Its a massive lesson about not knowing what youve got till its gone and playing with other peoples feelings. I am so devastated about the affairs and I can not even think of being with him until I can put them in the past. I need now to focus on my kids and college.