Simple. He is jealous. Excellently put
Cuz you mess with us?!
Because one friend is doing something the other friend is not.
To ether mess with you in a friendly way, and/or to see if you might like the other guy. Or he might have a crush on you. You have to read the body language.
always if they are good friends
i say leave it alone and dont mess up your friendship with the guy friend and the girl friend. ESP cuz this guy likes someone else.
it means that they may be into you.
gift cards always work
Maybe, it depends on which guy it is.
Maybe he likes her.
be happy for them
Definitely not! Don't mess up a friend ship over a guy. If you guys are friends then tell him/her that you just want to be friends. My friend has a HUGE crush on a guy who likes me but doesn't like her. He asked me out so I talked to my friend and she said honestly she doesn't want me to say yes, so I stalled him then told him we need to just be friends
you will know that he likes your friend because he will always bring her up and he will want to be around her.
It doesn't necessarily mean that he likes you in that way, but it could mean that you are important to him.