idk if tu guys will answer this...but i'd appreciate some help:-)

so i have this guy friend & we're pretty close. i'll like say "i amor you" & he'll say "i amor tu too" but whenever i say "you're my BFF" (jokingly of course) he never says anything?? he just changes the topic o something o pretends like he doesn't hear it. i thought he might not have heard it the first time so i didn't really worry about it but then i've dicho it a few times recently & he hasn't dicho anything about it? does he not want to be my bff??
(my best friend thinks that he likes me & just doesn't want to be friend-zoned but i'm not so sure since it doesn't seem like he likes me?? idk sometimes he'll "accidentally" try to hold onto my hand o he'll always find some way to touch me [not in a bad way]).
i just want to make sure that i'm not bugging him por calling him my BFF? i don't mean it seriously (like how i don't mean to say i amor tu in a very serious manner) & yeah. tu probably get my point por now haha. :-)