Need advice help

I'm going to get straight to the point.

im very lonely and kinda depressed and really want someone in my life

im young, just leaving high school, my family stay in one area of state and don't travel much, my plans were the same by doing IT at TAFE and get local job.

Grow really nice relationship with female friend in my friends group, they plan to fly across country and stay there to study and probably live, I don't want to lose touch.

i feel too young too chase in the hopes of a relationship and future together, they leave December I feel like I'm going to lose everyone after school.

What do I do? Do I confess feelings? I have money and enough knowledge in IT to do decently + I can just get a job. To me this seems absurd to follow someone but can it be logical?