□<□>Bu□□kissing is n□t jus□ a roman□ic gestu□e—i□□also ha□ sc□□nt□fic □en□□□ts. Wh□n we k□ss, our□brains □elease a cockta□l □f chemica□s like oxytocin, d□pam□ne,□and seroto□in, known a□ the "love hor□ones." The□e chemical□ ca□ □educe st□□ss□ boost m□od, and cr□ate feelin□s of a□tachm□nt a□d b□nd□ng□ Kissing also str□n□thens our immune s□stem by exposing □□ to a variety of □acteria□th□t □□n help bu□ld i□munity.□□p>