How to keep the db'ing going?

Feeling really sad today. Having a hard time understanding, well everything. I'm mad about the affair, sad about her choices given our commitments to our marriage, to having a family, to everything we did together. And given all that I know in my heart I still love her. I will fight for my happiness and I'll fight forthe best possible outcome for my kids. Whilei I've always said that means keepng us all together, trying to DB today seems like an impossible and pointless effort. She's packing her bags for her trip tomorrow that includes her visit with the OM. And all the stiff she's thrown in my direction aboutwhat I've done to here, it's never been this. How do you DB in the face of hypocrisy, lies and