He has Bipolar type 1/anxiety/ADHD/MDD/ PTSD and I have Borderline Personality Disorder/LUPUS/ADHD/PPD/anxiety/ PTSD 

Does anyone else live with their significant other having illnesses as well? How do you deal with not triggering each other? 
We are finding we seem to have a domino affect on each other's triggers. Has anyone found a way to deal with this.
My BPD diagnosis is the newest.
It's really hard not to feel like it's me all the time. Apparently I'm always splitting:/....?