Don't see Slenderman!

i went to the cinema with my girlfriend and we didn't see any reviews but that movie was the worst movie i have ever seen. The pop up scares were terrible and the plot and acting was god awful. We started to make out just because we got tired of watching but if you guys seen the movie what did you not like about it?

Is it really that bad?? Like be honest because I was thinking about seeing it with my girl