How do I know if he loves me as a girl or just as a friend

Me and my friend are mad close and we trust each other so much so I trusted him wit da secret that I like him and he was sooo sweet about it and theres an age difference if you look at my other questions you'll see. So he knows how I feel about him and...

that I love him but he only loves me as a sister in christ. I dont know if he loves me as a girl... You know how do I know how he feels

so your 13 and hes 21?!
I would say definently wait untill your quite a bit older
13 years old and 21 year old think about completely different things
its also very likely hell only see you as a friend, and not as a apartner.
because you are very young

you're 13 you can't love yet

Hes a man, your a child. He most likely (hopefully) only sees you as his little sister!

its not like that we are friends and I know he only loves me as a sis but well... we are mad close and I want to know if its possible for us to be together in the future when im older like when im 20 and hes 28

IF HE LIKES TO LIKE MAKE FUN OF YOU OR PICK ON YOU IN LIKE A WAY BOYS DO TO GIRLS THEN HE LIKES YOU BUT IF HE DOESNT THEN YOU MIGHT WANT TO LIKE SOMEONE ELSE...