Yeah... the "yeh" should never be said ALONE in a conversation.
I agree with dream, say something else. Don't be afraid to interrupt her. Maybe interrupt and throw out a little tease and some kino. This is so you can add a bit of sexual tension to the conversation.
Try to lead the conversation. This way, you have more room to guide the conversation whereever YOU want it to go and not where she wants it to go.
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Thinhman
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"When I get sad, I stop being sad and be awesome!. True Story." - One of the greatest PUAs ever!