Beautiful Lie (2019)

Both story started with a friend steal the kind, naive female lead's man. FL then took revenge against the fake friend by stealing the woman's son.

Both have a boy for hire theme. Boy for Rent is the lighthearted drama. Game Rak Ao Keun is darker with intense passion and betrayal.

Both deal with romances with an older woman and a younger host-type guy, and both have infidelity themes and existing relationship troubles.

Both shows have the same first female lead who got berayed by her husband and waiting to be pregnant but failed to be.
Second female lead who is crazy and possessive about being with the first male lead to be "his wife" and became pregnant but had miscarriage as a karma due to her evil deeds.
Second male lead younger than the first female lead who is caring about her and making all the blames to first male lead for his cheating on his wife.
Female characters rivalry but ended to forgive each others.

Both shows have the same first female lead who got berayed by her husband and waiting to be pregnant but failed to be.
Second female lead who is crazy and possessive about being with the first male lead to be "his wife" and became pregnant but had miscarriage as a karma due to her evil deeds.
Second male lead younger than the first female lead who is caring about her and making all the blames to first male lead for his cheating on his wife.
Female characters rivalry but ended to forgive each others.