Similarities:
-both couples had babies from long-time ago without the ML's knowledge
-both main leads work in the corporate world.
-both FML and ML had 'hate' for each other in the present time
-the cuteness of the couples' babies
-the chemistry of FML and ML

Differences:
-So Wayree is a thai drama while The Love You Give Me is a chinese drama
-so wayree is more dramatic and a bit heavy
-the circumstances of how they ended up having kids were different

-The same plot.
-The rich one in Sapai TKO is the guy while in The In-laws is the girl.
-Both poor leads are capable and smart in their own ways and both rich leads are fair and mostly unproblematic.
-Both mother-in-laws are seeking ways to kick out poor in-laws.
-Both dramas are full of comedic scenes.
-Both couples have superb chemistry. Couple of The In-laws have few kissing scenes while couple of Sapai TKO didn't have much kissing scenes but it's fine because they're dating in real life anyway.