Asalaamualaikum Warahmatullahi Wabarakatu,
Why does he NEED you? You mentioned he had a family so aren't they enough for him?
This whole world is a test. Everything in it is a test. Allah (SWT) knows what is best for you.
"...And it may be that you like something which is bad for you, and you dislike something which is good for you; Allah knows and you do not."
Explain to him that you two staying in contact is HARAAM in Islam. Marriage is the only way you two can keep in contact.
No because he is your Non-Mahram.
Why not? Have you tried talking to them yet? Have YOUR parents agreed to it? Is the guy a Muslim?
Do Istikhara and if it is positive then Alhamdulillah and if not then...love hurts...move on with life Insha Allah.
Pray, pray, pray, make duaa, pray, read the Quran, and PRAY.
Allah the Almighty said: "O son of Adam, so long as you call upon Me and ask of Me, I shall forgive you for what you have done, and I shall not mind. O son of Adam, were your sins to reach the clouds of the sky and were you then to ask forgiveness of Me, I would forgive you. O son of Adam, were you to come to Me with sins nearly as great as the earth and were you then to face Me, ascribing no partner to Me, I would bring you forgiveness nearly as great at it."