My brother’s girlfriend dumped him to continue her relationship with our Dad

A couple holding hands while sitting down at a table and drinking red wine in a restaurant for lunch together,

DEAR DEIDRE: MY brother’s girlfriend dumped him because she wants to continue her relationship with our Dad.

I’m a 27-year-old woman and my dad is 57. My mum lives abroad with my stepfather.

My brother’s girlfriend is also my best friend. She’s 26 and my brother is 24. They have been together for two years.

I’m a project manager for a cosmetic...