What do i do to get to know this guy?

Ok..so as i was randomly searchin ppl on facebook..i found a guy..who luks rlly cool..so i was goin thru his pics..ther was a pic..i saw..of him nd his bro..i thot they wer twins cuz they resemble each oder alot..nd i luv to interact wid twins(i dunno y)..so i sent add req to both of them. now..d oder bro accptd my add req..bt d guy i think is cool dint..:(...now d main part:- they r nt twins..indeed dey hav 4 yrs diffrnc btwn dem..k f9.. but now...today ther was a holi(indian festival) party at d general manager's house(gm of this town..not mayor..gm of d project..uh wateva!)..so we wer invited to d party... gm..is sme1 at d highest post in a project...our town is a project..wateva! so..d thing is..these two bros..ARE D GM's SONS!!!!!!! :o now i was rlly shockd to see dis guy ther..i almost shouted "OMG its him!!" but...how do i talk to him or get to knw him betr? he's d gm's son but he dsnt live here..he studies in sme oder state...so is der ne way i can get to knw him on fb? he alredy dletd me once...bt shud i send him a frnd req again sayin "hey i saw u at d party"...or ne oder way?? PLZ HELP!