haha. Highly doubt one would wish to jeopardize his life by taking such a risk but that's a good suggestion. Well, I'm just trying to stay on the safe side. Not that I'm going to get married anytime soon, still...trying to weigh my options and keeping 'em open too.... Who knows what route I might need to take. The best possible scenario would be if you were already in a relationship and your girlfriend was already here. 

And Meraj, you're right in F1 and GC not having any 'direct' relationship but again, no way the couselors would buy the claims of primary motive of a F-1 visa applicant not being a desire to immigrate once s/he applies for visa. One of my cousins who had won DV Lottery waited for 5 full years before he got married because he didn't wanna get married and leave his wife in Nepal. His wife joined him in 8 months after they got married and he'd filed paperworks for her.