Luv, my mind has been really tied up with my own sitch. If it had been me... I'd have been a bit more strategic and held off with the accusation.
I REALLY think you should go and see a L to protect yourself.
After I'd gotten the legal advice I'd tell him the following: "You know what H? I've had enough of your crap. I'd like you to pack your bags and leave. Right now. You say you're not happy? Well guess what. Neither am I. Take some space and go and sort your crap out. I've no interest in continuing any kind of relationship with an indecisive, insecure little man who doesn't know what he wants. If you're the kind of man who needs to have a GF on the side to stroke his ego you're not the kind of man for me. I couldn't be bothered to worry about you right now. Get out."
That's the hardass in me and its a hardline approach. Consider all the above carefully because there are risks involved.
M:11 | T:12 | Status: Married 4C's of WAS communication: Cool, Calm, Collected and CONFIDENT