Do I have a crush on him?

so basically this one boy asked out of my friends (she's like a little sister to me) so she got his snap and also gave me his snap so I could question him about his intentions with her and etc.. and she ended up rejected him but me n him are now friends because I think he's a nice person but I'm not sure if I have a crush on him like if he messages me I will instantly reply to him and if one of my best friends for example message me I will take abt 3 minutes to message them back or if I'm offline and I go on it and I see that him and my other friends have messaged me I'll open his message first and talk with him and then message my friends after.

Potentially. Let's see how it goes. It seems the beginning of a friendship but that's all so far.. need more details on what you do together on your own

I send him vlogs abt my day , he tells me he's done a stupid thing ( he punched a wall) we haven't started hanging out without our other friends, He makes fun of my height umm yeh.