Ok first off, you're not ugly at all. You're actually pretty! And you don't have to have a boyfriend, you shouldn't feel left out if you don't. I'm 13 too, and even though I have a boyfriend (he's my first one though) I have plenty of friends that don't, and even people that are older than me that I'm friends with don't have boyfriends. It's really not that big of a deal, and you should just be happy with your life.