AFTER READING YOUR SO WHAT HAPPENED:
You don't get it, he doesn't care about you. He will someday marry a nice Muslim girl who has not been to bed with another man. Yes, you just leave, he will breath a sigh of relief when he returns, because there will be another person who will take your place if he's not already seeing other woman.
He's on vacation without you because his family has a good Muslim girl at home in mind, and both families have probably already sealed the deal. They will marry when he's done with school.
No matter how much you love him, in the eyes of a Muslim family, you will never be good enough for him.
Don't you think you are worth having someone love you back? YOU ARE WORTH THAT AND SO MUCH MORE. There must be some family or friends you can go to for support. We are here for some support but you need up close a personal attention. This guy is no good for you. PLEASE GET A GRIP! Go to counseling, talk to clergy...get some help.
L.,
Are you also from another country? Where is your family?
As a last year medical student you must be very "book smart", so I am puzzled as a to why you want to stay with a man who is clearly "using" you and has no intention of making a lasting commitment.
You should be grateful to God that you have not had a child with this man. Since you are about to become a doctor, even if you did have a child in a solid relationship, with a committed husband, it would still be difficult for you, but not impossible to be wife, mother and Dr. L.. It would be "impossible" to do this with the man you describe.
Not only to I suggest that you "refuse" all his calls and messages, I would pack my things and move out while he is away! Then send him a "DEAR JOHN" letter that will say nothing more then "I'M OUTTA HERE AND YOU HAVE JUST LOST A REALLY GOOD WOMAN".
L., sometimes love is not enough, especially when it's as one sided as you describe. There are many good men (not boys, such as the guy you've been with the last 5 years), out there just waiting to meet someone like you. Don't cheat yourself or sell yourself short anymore. Start living YOUR life without this loser.
Please keep us posted.
Blessings....
PS....Becoming engaged doesn't mean he would ever marry you. I have a friend who was actually engaged for 40 years and the guy didn't marry her until a few weeks before he died. She too was a very successful business woman, but a very submissive and abused "girlfriend". She never had children, he rarely went out with her, didn't like most of her friends, avoided holidays with her family....she basically was there to take care of the home and service him when he decided. Very sad life. Don't let that happen to you.