Guy younger than me for 10 years is madly in love with me, am married with 3 kids. he refused to marry anyone?

a guy whose younger than me for 10 years is madly in love with me, he made me love him too. he really cares for me in whatever case am in. my husband doesnt care alot for cuz hes my second husband , he has big kids age like me , first kid is 35, last kid is 25.sometimes he beats me in argument. this young his parents wnts him to marry one of his relatives but he refused all cuz of me cuz hes madly in love. but i told him to get married to look for his future. he refused telling me tht he cant be another woman he felt tht i wil be jelous if he will be with his wife. cuz he becomes jelous when am with my husband but holds himself cuz he loves me alot he doesnt wnt me to get the same feeling wht he gets. i gave him a green light to agree with his parents to get married he refused. but i really love him more than my husband , cuz whenevr am in need hes there for me more than my husband. please hel me wht should i do am confused too