You're young. You've got a lot of life left ahead of you, so it's a bit premature to be asking if you will be forever alone. There are lots of people in this world. Eventually, someone will come into your life who is compatible enough with you to have a relationship together. You just have to stay confident in the meantime, and not give up on yourself. Knowing that you are a valuable person worth wanting will take you a long way. The confidence you exude will draw people to you. Maybe not tomorrow, or even this year, but at some point in your life, it will.

Keep in mind that people can be very mean at your age. Your peers are trying to find their identities and fit into social groups, just like you. Sometimes that means they choose to bully others to gain acceptance into a group, or they ridicule people they don't understand or who seem different to them. The way they treat you doesn't mean you deserve to be treated that way. They're going through their own stuff, and their words say more about them than they do about you. Remember that as you are going through your day, and don't let it change your perception of yourself.