What’s a secret you’ve kept from a partner that still haunts you?

Years ago, I cheated on my partner and I never confessed. I was too afraid it would shatter their trust completely. It still eats away at me every time I see them, wondering if I'll ever have the courage to come clean.

i buy ice cream privately and never tell her at all it has become very frequent nowadays

Sometimes I fart in the car, ngl it smells but I will purposely tell her it's ghost so don't mention anything or bad things going to happen. Yea, shit happens