Thanks for mentioning this.
Many members of the forum have met online and it is no longer a "weird" thing, but one has to take many precautions when meeting in person, particularly someone like the OP, who is still a teenager.
@Kokoro_Minora, the whole thing now might seem super romantic, dreamy, movie like, but you have to be wary, protect yourself and think in a practical way.
Obviously the safest choice is him visiting but even then, having a stranger in your house? Not the best idea. And if he stayed in a hotel, who would pay? That of course, if his tourist visa application was approved.
As others have said, visit him, but DO NOT TRAVEL ALONE.
Make your mum, relatives or friends go with you or join a group and meet him just for movies or coffee. And definitely do not stay with him.
Or go old school and hold a lovely epistolary relationship until you're both fininancially sound and old enough to meet in person without asking your mum.