While at the movie, lean over to the boyfriend and say, "I need to go to the bathroom. Let's go." After he gets to the bathroom with you (don't worry, he'll accompany you. All guys like group bathroom trips) tell him you dropped your wallet in the toilet. When he leans in for a closer look, push him in, and give the toilet a good couple of flushes. Bye bye boyfriend.

Problem solved.

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"Nothin' up my sleeve. . ." --Bullwinkle J. Moose