I like my best friend

So I have always knew that I has bisexual, and a couple of months ago my best friend told me she was too. So he maked out once on the hot tub, long time ago. Also when we are in bed, we like to put each other horny but we never get to the part of kissing. And we both want to, because she says things like: "how do you do to tell someone you want to make out?" "I want to make out SOO BAADD" things like that and I want to but we get so nervous on bed and we don't know how to. Help!!!!