Why is this Leo guy being so nice to me when he ha

Well,I did not tell this Leo that I had a crush on him.

We only communicated face to face four times but we get along very well,and yesterday we was texting each other,sharing our old love stories and the current crush,I did not mention that my crush was him,but he did mention his crush are all from his college
Then,everytime we text,he always come out some random topics like when he's small,he got bitten by ants all those and out of nowhere he told me there's an ant on his screen,I knew him for a year,but we didn't see each other for a long time until few weeks back,we need to go study for the course,I met him.He was a very encouraging,outgoing and friendly person.We took selfies,so i asked if i could put that as a profile picture,he'z okay with it.But since he has a crush,why is he okay with it?
Then,he facebooked me for my number and i gave him.When i offline,he facebook me to send him the selfies.I was offline so idk about it.then he called me,he tell me to send him the selfies.
Why is he so nice when he has his own crush ? ><
I'm a leo too btw