Even with a hot new romance to keep her happy, Katy Perry couldn't help but be obnoxious about it when a fan at a European concert held up a sign asking her to marry him, RadarOnline.com.

The loudmouth songbird, 41, pitched a diva fit that someone would dare propose to her amid her relationship with Justin Trudeau , as the pair took their love affair public earlier in the week. Article continues below advertisement

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"There are so many crazy signs," Perry marveled as she looked around Prague, Czechoslovakia's O2 Arena on Thursday, October 30.

"This guy is trying to get me to marry him, and he has a ring in his hand," the singer roared as a man could be seen holding a sign reading, "Katy Perry, will you marr

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