Why do I blush around the guy I really like?
You literally answered your own question, in the question...
Because you like him
Because you really like him ...?
You like him a lot
It's normal it's because you like him. I love this certain girl and I'm kinda a shy guy and I blush every time I see/talk to her lol so don't worry bout it.
Because its a guy you really like...
It's butterflies that accore in your stomach.
I blushed around guys who I have like or a crush.
I do when my boyfriend comes around