I think my bf has a crush on his MUM.

😭😭😭 I'm almost certain my boyfriend has a crush on his mum. No joke please no judging. He's literally obsessed with her. He shows me pictures of her all the time, calls her every chance he can, texts her every 5 mins, talks about her ALL THE TIME. it pisses me off so much! We went to the shops today and him and his mum were walking infront of me the whole time and talking. He would sometimes come up to me but walk straight back to his mum and continue talking. It fucking makes me so angry. And when I tried to tell him he started laughing but he didn't deny it. And everytime we eat he makes sure his mum is next to him or across from him and he always stares at her and looks her straight in the eye it's pissing me off so much 😡😡😡😡😡😡 help?