how old is he? is he is 20 like you he shoud do what his heart tells him and not his parents, the problem with Arabic countries is that theyre so attached to their religion and traditions it doesnt surprise me they didnt agreed with him marrying you, have u met in person yet? I would suggest you both to meet before deciding or not deciding to get married, perhaps in person you wont feel the same you do on the net, or maybe then if you meet him in person THEN youre fully convinced he is the love of your life, then its time for hard choices, try to think what would you sacrifice for the love of your life and then think if its worth it..dont end up things like that..try to talk to him
there should be a way you can be face to face and then test this love that has grown between you too.
one piece of advice here, as a girl I must tell you that in the arabic countries women arent always treated as equal as men..even if his parents agreed and you married him in Lebanon..could you stand that?
when we are in love we think the world will end if we arent with our loved one anymore..heh, trust me the world doesnt end, there are always more surprises to come to our lives, I know you dont believe this or want to believe it in this moment, but what Im telling you is true, theres life after love.. and please dont think about suicide, its not worth it, try to picture all people around you that would be hurt by a decision like that, life is precious and theres always a solution for everything, calm down and think things over

when Im so desperated and I think theres no solution to my problems, and I cant do more to solve them, I leave a part of them to fate..if he is the true love of your life and you are meant to be together life will find the way and will show you what the solution is.
Good luck I wish you the best!