'You' is a show from the Lifetime network, which has more of a reputation for shows that are very women-centric and sometimes ridiculous. The women-centric comment isn't meant to be derogatory, but the ridiculous comment might be. Lifetime has more movies about spousal abuse than any other network. When you dominate that genre for so long, you end up getting into weird territories with your plot lines.
'You' definitely fits in their line up. It's about a guy who stalks a girl until they fall in love, but then he murders the people in her life that don't like him. That sounds like the plot of one of Lifetime's movies but extended out to fill an entire series. If you're into trashy, so-dumb-it's-fun television, then you might want to watch this series, but if you're at all hesitant, go with your gut.