According to my ex, yes. I'm a liar because, months before I dated him, I was dating this other guy who I gave head to. But when I was casually talking about this guy to my ex, I told him we made out but never had sex. Well, he found out I gave him head (HOW, you ask? Well, he hacked my FUCKING email and saw an IM conversation that was saved in gmail) and told me I was a liar. But really, do I need to tell a boyfriend something that should have been SO irrelevant? I didn't want to talk about sucking some other dude's dick to him, so I said we made out. BFD.