Well just be nice to the guy not too much just as a friend then the rest will come do not worry about the other girl just do not forget it all takes time.
She might like you
An outgoing guy might like a girl who is outgoing as well. He may like a girl with a sense of humor, who likes to try new things, and is fun to be around.
it will always be might guy. Guy doesn't have a sister
it means he trusts you he might like you
just ask him
If a girl finds you cute, she might like you. Key term is might. I'm saying this because not every girl wants to date a guy they consider cute. Most girls like the badboy guy, but if you want her to like you just be yourself, it's as simple as that ;)
Honestly it depends on the guy. An emo guy might prefer an emo girl. An athletic guy might prefer an athletic girl or a cheer leader. It all depends on what you may have in common with the guy.
This might sound crazy but ask the guy out. Nothing is cooler to a guy than a confident girl.
You can't make a guy like you... and if he already has eyes for someone else you might as well hang it up.
Who cares, The guy will like one girl and one only, IOt might be you it might be her,
Ask her out on a "light" date like a coffee at Starbucks, that will break the ice easily and she won't feel pressured as it is a public place.
Wait, he might get over this girl.