If you describe someone's feelings or actions as amorous, you mean that they involve sexual desire. showing or concerning sexual love (amorosus, from amor )
[ 'a-m&-r&s, 'am-r&s ] (adjective.) 14th century. {14th century} via Old French, from Medieval Latin amōrōsus, from Latin amor (“love”), related to Latin amāre (“to love”).