why am i crushing on a guy who isn’t my husband?

Been with my husband for 10+ years and he’s the absolute best. We just got married last year. But now I’m randomly catching feelings for a guy I barely know?? We only see each other once a week for work stuff, barely even talk, and yet…here I am watching his stories and thinking about him way too much. He never made a move. I was actually the one who DM’d first (just to chat, no flirting). Now I feel super guilty even though nothing has happened. I love my husband and don’t want to mess this up. Anyone else been through this? How do you shut your brain off? #relationshipadvice #marriedlife #help