Single moms get lumped into the same "garbage women" category as the ones on the c0ck carousel, the ones with lots of male orbiters, etc. I generally do NOT feel sorry for single moms, especially ones who have multiple children with the same guy. It was her choice to make multiple children with this guy, and if he left her, then she made a crappy choice for the father of her children. If she left him, then she made a crappy choice to remove the children from their father.
When it comes to dating them, they're only good for a fvck n' toss. I've dated too many damn single women, and they're not relationship material. I think the only way I would even consider a single mom for a serious relationship is if the father died. That's a situation where she would 100% not at fault for being a single mom. Other than that, single moms are at least partially to blame for their own situation.