Most Helpful Guy
Well, you're just 16, hormones play a bigger role than common sense. At your age, well, actually younger, I cheated on one of my girlfriends. I felt like a badass, now looking bad at it, I feel stupid for what I did, I feel worse about how I felt than for what I did.
Many of my girl friends at that age thought similar, they didn't care much about serious relationships, just like guys.
Now, with 19, I see many more girls, and guys, that are against cheating. It doesn't mean they're more ready for a relationship, they just understand that cheating is not the right thing to do.
Girls don't cheat as much as boys, just like boys don't cheat as much as girls. When you get out of HS you'll see a big difference in people's mentality towards this topic.