Befriend!

Soften: This word can help your make friends.
Smile: Smiling says I enjoy being with you. "It's a voluntary act. Anyone can do it."
Open Posture: Let your body say your want to be friends. Uncross your arms and legs. The more open your posture, the more welcoming.
Forward Lean: If your lean toward people, they get the message that you're interested in them and they'll like your for it.
Touch: Touch is one of the most powerful nonverbal ways of communicating. Try shaking hands with two hands. Or, pat your friend on the back.
Eye Contact: Another potent way to express interest, attention and respect.
Nod: People love it when you nod when they're talking. It doesn't mean you agree, just that you're attentive.