My bestfriend sister(LGBTQ)

Main character: kamora(kuh-more-uh)
Has a bestfriend name nicole that has an older sister bree who is a stud. Nicole an kamora have a rule where nethier of them date eachothers siblings. One day kamora and bree end up having a one night stand and kamora later finds out she's pregnant. Do you think nicole and kamora will remain friends?!?
(Now i know a female cannot get another female pregnant just a story i thought of so please no negativity and enjoy!!!)