random hook-up now opposing counsel

This is awkward. Met someone on a dating app…more like hook-up app. We didn’t talk about each other’s lives or jobs, we just did the thing the app was designed to do. After that, we separated and I didn’t think much after that.

Well 7 months later after that encounter, I find that this person is now opposing counsel. Not sure how to exactly approach this situation. Should I text them separately to address how awkward it is and laugh it off? Do I just keep it strictly professional and don’t talk about it?

Thoughts?

Edit: thanks for the replies everyone :] very helpful!