How to tell if ur bff has a crush on you?

First dude start a conversation with her to know stuff about her wat she likes and let her do most of the talking u can talk to but she would like to talk to u about herself her problems that she has a guy needs a girl physically and a girl needs a guy emotionally so try to help her out with problems she might have to show u care about her. If she flirts its hard to tell cause some girls flirt all the time and some only to guys they like. If she Is liking u don’t let other girls hug u and don’t smile to a girl while she is around she will think u lost interest if a girl is giving u eye contact she has to love u caus if she didnl;t she would be looking up in space or looking somewhere else. She may try to touch u often not all girls do that cause there either nervous or worried about ur reaction like if u didn’t like her and she started touching u she might think ud go like wtf stop touching me that can be some guys reaction. Oh check her friends ask one of their friends if she likes u she might not reply but oh well at least u tried. See if she ever needs ur help with something try to help her out she might even not need help but she wants to see if u react to her. Always smile at her she might get nervous but that’s good she likes u then u just get her open by u doing the moves. Some thing she might do that tells u likes u or she likes u and she is nervous is playing with her hair staring at u she could even walk down the hallway give a quick glance at u and smile. She could ask wat kinda girls u like she wants to check if she fits ur interest a lot of girls r shy u do the move ya I think that all I can say