Is it bad that I'm pretty sure I'm mentally cheating today?
What did you do to cheat in your mind?
I was thinking of flirting with a person who I saw as a friend.
Thinking of flirting with someone around you is mentally cheating and hurts your current partner. Mentally cheating will eventually lead to real cheating.
It is better to let loose a bit and have some fun in my daily life.
You shouldn't cheat in any manor and need to be more faithful to your partner in your mind and in real life as well.