Should i go for this guy even though my "friend" liked him too?

my friend recently tried getting with this guy whose AMAZINGLY gorgeous. shes not really my good friend, more like a bit closer than acquittance. she asked him out and he said "id really rather just be friends. i like you, but not exactly that way." she said he totally led her on but girls like her take a "hello" like a marriage proposal. i liked the guy a month before she told me she liked him and got rejected by him. i think that he likes me back because hes always smiling in my direction and trying to hang around me. also he will randomly come up to me and ask random crap. i really want a chance with him, but is it worth the betrayal my friend might feel? i should have told her i liked him but now she just hates him. it hasnt ruined her life in fact she seems completely over it but im just not sure.