First Kiss???????????

Okay so me and my boyfriend have been dating for a while...and we went to the movies a few days ago and he almost kissed me, but it didn't happen. So we we're talking about it and he brought up kissing. he said he wanted to. I really want to kiss him, just soooooo nervous. What should I do? Iwant to kiss him, but I don't know when would be a good time.