'He's married to three wives, had issues with two and he wants to marry him - i love him' what should i do?

Hello, help me and post dis pls I need your advice am dating this man that seriously want us to get married as soon as possible. I knew him for the past one year. His married to three wives, but he had issues with his two wives. 

 

And they are no longer together so presently only one is in there, Doing her masters in london. This man is fuckin rich, handsome, good looking, and very nice. Fun to be with also. D problem there is that, we had sex three to four times. And he also know I slept with some of my ex. 

 

Apart from that He slept with two of my friends but he knew them before I knew him. But he also didn't knew they were friends. Because he slept with them on different occasion. And i hav been thinking lately am i seriously making d right decision to accept his proposal and marry him. Getting married to sumone that slept with two of my friends. Will he continue sleeping with them. And that means he sleeps around. But sincerely speaking he takes good care of me and help me financially. Via Break-Up-Makeup