I'm going to bring a date to a work event when my ex is there
What is the reason for bringing a date?
My ex cheated on me and faked an STD lie, so I want my new boyfriend to hit on me in front of people, knowing he'll be humiliated when his colleagues to see us happy together.
I know you're mad, but it's better to just move on from an ex. Otherwise you could obsess over them forever.
Haha I'm going to be so fucking happy and I plan to post on Instagram a picture of me with my date.
You need to jettison the negativity of your past relationship. It's unhealthy to weaponize your new boyfriend to get back at your old one. If you're unable to let go of the past, you might want to think about counseling.