This is a cute idea for a topic. I'll put in my 2 cents. I am non greek that dated and married a frat guy. I used to be very anti frat. I dated a couple of frat guys that where incredibly immature. They seemed to think that because they were in a fraternity they were now elevated to some sort of status meaning I should be honored to date them. I don't think so. Then, I met this adorable guy at a party and dated him for a week or two beforing finding out that he was "greek." Hmmm. We decided to not date exclusively. That lasted from maybe an hour and his first letter asked me to be his girlfriend.
We continued to have a long distance relationship resulting in a lavaliere then a ring. Now we have been married for almost 7 years and have two adorable kids.
His status as a "frat boy" had some effect on what I thought of him. It made me a bit wary. It also frustrated me that the frat was such a priority. There were many weekends that I would have loved to have had him home that he had a responsibilty to stay at the house. Specifially thinking of greek games, I got back by telling friends that he wasn't in town because he was busy wearing a dress. Part of the event was a Ms. (fill in the fraternity) contest. My love was representing his house.
The photos will make great stories for our children some day and he drove up to visit the very next weekend. On the other hand, I loved wearing his sweatshirts and attending formals. I still love the bond that is there between the brothers and really truly feel that I have over 70 brothers-in-law.
To sum up? Yes, there are some stumbling blocks that go along with dating as non greek and greek. Not insurmountable tho. If he really really loves you, you will come first in his heart. You need to make room for the friends tho. You need to let him spend time with friends and try to understand that this is something important to him. If you can appreciate the committment he's made, who knows, maybe you will find some new friends and even change your opinion of fraternities.