It's a basic jaded man/love starved woman plot, but when the FL spoke about how the ex wife left him and didn't love him it was so weird to me, like his negligence caused the death of their son, of course she hates him and divorced him.
Basically ML had a previous family, was to busy trying to be a perfect company president and didn't give his son the time of day, son tries to prove to dad he can ride his bike but gets hit by a car while with dad and wife leaves him. FL is a secutary who worked for ML later, didn't really know he used to have a family, sleeps with him and gets pregnant, ML DOESNT BELIEVE HER AND IS SUPER RUDE TO HER, a year later she seeks him out to get to know her daughter and propose joint custody but she still has feelings for him and doesn't understand why he can't get over his old family.
The story gives a overall callous and ignorant vibe in terms of dealing with death of a child and grief, and the way the ML treats the FL when she tells him she's pregnant and even after the kids born and HE STILL DOESNT BELIEVE THE KIDS HIS.
hated it from the bottom of my heart lol