Whilst things are started to get heated up, suggest a 69 and see how she reacts to it. Or what you could do is while your laying kissing or something, when she goes to kiss you move so she kisses your neck, could try moving YOUR body upwards if you have enough room, hopefully she won't follow you?Definitely though just say"do you fancy doing 69"if she doesn't want to, don't push it, cut down on what you give her by a lot though. When she wants it herself after waiting for you to, she'll probably go down on you.