Some background info on my mom's boyfriend: His now ex-wife kicked him out early 2020, so he then went on to live with his son and his wife. Fast forward, said son's wife also kicks in him out for unknown reasons. Another important note here is that my mom and her boyfriend knew each other for 24 years, but only recently got in contact again. After my mom heard he got kicked out of his son's house, she offered to let him live here, and now they're in love and dating. Fuck, my mom's boyfriend even said to me that if my mom really likes him back, he wants to marry her.

So, with that background info, me and mom's boyfriend are both insomniacs, so we often sit up together at night, as with last night. Mom's boyfriend started talking about how most women suck, how they aren't good (world) leaders, how they always switch from guy to guy forever, a whole bunch of stuff, and I actually agree on him with that. I then asked what makes my mom, especially since she's a single mom, what makes her an exception from all of that. He replied the following:

"I think your mom is an honest and loving person, and I think she didn't choose to be a single mom, it's not her fault. It's the guys she dated that got her into this. The problem with women, for example my ex-wife is, is that change alot over the years, making them unloveable. Your mom didn't change the last 20 years, she is still the same, honest and loving person she'd always been"

I'm not entirely sure how to think about that. He clearly recognizes how bad women treat men, and he himself even got kicked out by two different women in one year, and then goes on to date a single mother??? That just doesnt't look right to me. I tried talking about it, and explain why single moms really aren't that great. He kept insisting my mom is different and how it isn't her fault she is a single mom. After a while I stopped trying. I decided not to tell him about all the issues my single mom has been giving me because I didn't want to provoke any aurguments.

How do I deal with this? I don't want him to fall victim to yet another women. I might not have a choice in living with a single mom, but he does and I want him to make the right choice. I know that he owns a house in the US, but we live in the Netherlands. I wish I could persue him to go back to the states, maybe take me with him. He already plans to do that after covid, but he wants to take my mom with him then ofcourse. How do I convince him to leave my single mom because it's just the best for him?