As long as your enjoying it and she has no problem with it....I wouldn't question it. Go with it. I mean kissing is a good thing....and yes it usually is a sign shes into you. I certainly would not kiss a guy who I wasn't into.

Now if she were rushing you into the sack then I would think twice about her. Just enjoy it and try not to worry so much!

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Appreciate the good times and learn from the bad times....