On birth male/female ratio is pretty much 50/50. So at any stage (except older >70 because woman usually lives longer) ratio should be similar. LGBT are just 10% of population and distribution between gays/lesbians seems also 50/50.
Based on that if there is a single male there is another single female somewhere. The only reason that comes to my mind that more female migrated from Finland somewhere else or there is a big immigration of males into Finland.