Velcro, perhaps I can suggest you reframe that last sentance?

I will take as I have crossed a limit, will shut down, and will never approach our relationship again.
I will take as I have crossed a limit, want to shut down, and want to never approach our relationship again.
I will take as I have crossed a limit, may want to shut down, and may want to never approach our relationship again.
I will take as I have crossed a limit, may want to shut down, and may want to never approach our relationship again, but I will try.