This isn't the 17 century. A man will not ruin a woman if they have sex and that's all he wanted. I haven't wanted a relationship with some men I've had sex with and it's perfectly OK if a man wants just sex. Most men indicate that in non verbal and verbal terms anyway, so you can choose to say no thank you.
I find it pathetic when woman act as if it's still the 17 century and if a guy has put his penis inside them he's somehow obliged to eternally love them, marry them, or at least date them.
Just get over yourselves women. Don't force a man to be a dad and he won't be a "deadbeat dad" and don't sleep with a man you don't know where you stand with if you can't handle a bit of normal human rejection.
Are some men emotionally stunted, or even sociopaths, yes, but so are some women.