I met a girl and went out to a fun live rock show in vegas last night. We had a blast and i recognized some ioi's and we exchanged kino. When we got back to her place to drink some more and hang out, i gave her a neck rub down and just tried to escalate kino even more. Shortly after i kiss closed her and started petting a little bit and her body was moving around like she was seriously aroused. I thought this was an easy fuck, however she made little comments when my hands got closer to her tits. She said, " you better watch it", not in a serious tone but a kinda of playful yet challenging kind of way....... we continued to make out and and all and then we cuddled no sex and went to bed. Does she want me and is trying to hold back to not look a certain way or what????? WHAT IS SHE REALLY THINKING?

How the hell anyone except her can know what she thinks?
Remember what YOU did. You kissed her, cuddled with her. That means that you were going to sex. Maybe you didn't made enough comfort or so.

I believe if I would touch girl's boobs and she would say "you better watch it" I would respond: "what? do those two bite?"

Anyway, remember, you've gone far with her and it's not important what she's thinking. Maybe read more stuff about LMR, it should help too.