I JUST FELL IN LOVE WITH MY BEST FRIEND...HELP?

hes everything i ever wanted in a person... and i know it because ive known him forever...platonic friends... weve been there for each other to help one another start relationships and weve been one another's shoulder to cry on when they end...recently he met a girl who he really likes and he asked her to be his girlfriend...she said she didnt want it to be a relationship because apparently she just got out of a bad one...she wants him to meet some friend of hers...and other excuses...i cant tell if she really likes him or not and now im falling for him....and whether she likes him or not ...hes crazy about her