Manda,

How can you stop spinning in circles?

How about kicking him out immediately?  I cannot see how you can think straight when you have a lying, cheating, unrepentant man living with you.  It’s his problem to find alternate living options.

Change the locks.  Cut off all contact with him: social media, calls, texts, email, etc.

You may you think you love him but you need to love yourself first.  Give yourself some respect and dignity.  You can love him from afar, from arms length but if you respect yourself then kick him out of your life in order to heal.

You can be angry, confused, disgusted, and all of those other emotions but you need to take care of yourself.

Mark