In love

I can't stop thinking about this guy.... He's got a gf and he lives 12 hrs plane ride away... He has no idea ... And there's a reason for that.... We r second cousins..... What do I need to do to get over him..... Oh and I'm good friends with his gf .... Help please.. No nasty comments please, people have different opinions about cousins and dating.... I am aware that the majority of people tend to think its gross... I do too, if they grew up together closely... But I hardly ever saw this guy.... Please help, I'm going out of my mind....