It's hard enough getting to know a guy and making a relationship work, but sometimes the first step is the hardest. If you're looking for a teen guy and all the ones around you are unavailable or not what you are looking for, you might just need to get out and find some new places where teen guys congregate.
There are many places teen guys go to hang out, though they're often going to these places to hang out with friends they already have rather than to meet new people. But if you have the courage to approach people and the skin to deal with rejection if they're just not interested in meeting you, there's no reason you can't try to meet teen guys at places like a park, skating rink, concert, mall, coffee shop or movie theater. You can approach them with a compliment, then ask if you can join what they're doing or get a phone number to call later.
If you're not ready to approach people you don't know, there are other places you can get to know teen guys. Focus your search around an activity you enjoy, since then you can at least have fun while you're trying to meet someone. What's more, if you do end up meeting someone, you'll already share an interest.
Most towns have groups filled with people with a variety of interests. If you like books or movies, you might join a book group or film club. If your faith is important to you, you might meet people through a group at your church or temple. There are also groups that meet to play sports and games, build robots, share their writing or talk about every imaginable subject. Many people find others with shared interests and coordinate events through sites like meetup.com. Getting involved in activism or volunteering is another option.
Getting a job you're interested in could also help you meet guys, since you'll automatically have a pool of co-workers to interact with regularly.
You can also meet people online, although you should be careful and take precautions if you plan to meet in person (tell people where you're going or bring a friend along, and always meet in public). This is a viable way to find others who are also interested in meeting someone, and you can chat online beforehand to get to know each other a bit before meeting in person.