Stuck in a between a hard rock and a wall

Hello lovely ladies. I don't need rude comments or anything just need advice. So I've started talking to this really sweet guy! He gives me so much life. The only problem is He's married. But he been separated from his wife for over a year and he is only still married to her because she has no job and needs his insurance for like cancer treatments. She will sign the papers after all her chemo is done with. He lives alone I've been to his house many times. I just really feel horrible about the situation. I mean they don't want anything to do with each other but I'm really confused with everything. I wanna say I wanna keep talking to him but I swear like I feel he's doing his wife bad... I'm so freaking confused 
Update: Everything with his wife is not adding up. Her being sick with cancer and everything. She so say been in the hospital for months then some how fell down a hill and broke her ankle. She is still trying to con him out of his money. She can't pay her car note so he will be stuck paying it but she so say needs it for work. How if you're jobless and in the hospital. I don't understand. And he just served her the papers. So my man had been 💯 since the being so I caught a good fish that will always be honesty with me.