My BFF is in love with my brother it makes me uncomfortable

Hey guys soo my dad is a pastor and my god sister is in love with my brother she is always talking about him and it makes me uncomfortable. She used to be one of those people I could talk to anyone about but now even since I’ve started high school her priorities have changed and it’s like I lost my bff to my brother can y’all give me some advice or something I just need someone to talk to about my problems