noun

a man who is charmingly attentive to women.

he launches himself into a gallant’s career of amorous intrigue

suitor,wooer,admirer,worshipper,beau,sweetheart,lover,love,beloved,boyfriend,young man,man friend,escort,swain,paramour

verb

(of a man) flirt with (a woman).

Mowbray was gallanting the Polish lady