<□□But kissing is n□t□ju□t □□r□mantic ge□t□re—it also has scientific be□efits. When we k□ss□ our□br□□ns r□lea□e a cocktail □f□chemicals l□□e oxytocin, □o□amine□ □□□ □erot□□in□ known as□the "l□v□ h□□mo□es." T□ese □hemicals□can reduce □tres□, boost mood, and cr□a□e fe□li□gs of at□achment□and bonding□ Kis□ing a□so st□eng□he□s□our immune □ystem by□expos□n□ us to a variety o□ bac□er□a th□t can □elp build □mmunity.□<□2□结语