Yes, it is possible to to find love over the internet, but not at 15.
A 15 year old does not have enough life experience to make a decision that can impact the rest of their life. 21 years old, yes, but not 15.
I expect that any 15 year old reading this will disagree with me, but as they mature, they will learn that this is true. As a 15 year old, enjoy your adolescence and its carefree joys, while you can.
Adult responsibilities will be with you sooner than you can imagine.