my best friend didn’t tell me she’s seeing a guy!!

i tell her everything about my sexual life and every guy i talk to and everything. turns out she’s been talking and hooking up with one of our guy friends. he’s the one who told me bc he assumed i knew since me and her are roommates and best friends. i feel so hurt. i can’t believe she would hide this me.

should i be upfront with her and talk to her about it? i feel like she won’t talk to me about it, she’s so secretive about her life

and she’s my best friend and roommate so i want to know her well

i tell her everything

how can i get her to open up more to me

it makes me wonder what else she is hiding