Seven years to study in another country? I'm not sure I believe it. I'm asking you some questions to try and fill in the gaps.
How old is he?
What country are you in
What country does he want to go to?
What qualification is he seeking?
Does it truly take 7 years to study this full time?
Is the overseas qualification recognised where you live?
Can he get the same qualifications locally?
Why does he need to send you money?
Why do you have no friends?
Why can't you talk to your parents?
After six years together, why aren't you already engaged?
Why not go with him?
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.