(NCed due to personal details)
Long story short(er), my parents separated some years ago. My Mum more recently got involved with another (married, fwiw) man.
Last year my parents got back together again. But my Mum keeps sharing photos and videos of this man (he's a musician) on FB. I don't think there's anything actually going on between them, but I think she's still harbouring a minor obsession. AIBU to be weirded out by it all, and also to feel bad for my Dad?