Pals she Need ur Advice

I'm a girl aged 20 doing
Accounts
at nipa campus. I'm staying in my
sister's house. here in Lusaka kabwata.She is paying my
school fees
and she gives me
whatever i ask for....The
problem is i love her husband and
we are dating,,,,,he
also love's me. He said
he made a mistake to
marry my sister....I love my
sister's husband too much, he is a
money maker...Now I'm thinking to be his
second wife... But first thing I
want them to divorce... What Can
i do guys?? Help me!!! pics below