Nang Rai Tee Rak (2015)

Both female leads are famous actresses and have similar personalities. They're independent and would stand their ground for what they think is right. They won't let anyone push them around. Also, they started on the wrong foot with the male leads, who both seek out justice for the people.

Kleun Cheewit and Nang Rai Tee Rak are my top Thai dramas. We know that their TV series lean more on the slap/kiss genre, which is actually a very good watch if executed properly. I do believe that both have managed to balance the love/hate relationship that the characters have. Too much angst and drama and there are characters who go over-the-top but all in all, both dramas are highly recommended.

in both:
*FL is famous celebrity
*ML becomes bodyguard
*love/hate relationship

A love to kill is much better also dark drama.
If you liked this things in Nang Rai Tee Rak you can try this Kdrama.
Though I'm not sure if after "love to kill" it's proper recommendation (these dramas are on different level).

It has the same bodyguard trope and both male-leads are Lieutenants and are the best on their work. Female leads have the same stubborness and spirit,and does sometimes act spoiled and puts themselfes into trouble in which the male-leads always have to save them. There is also suspense in both dramas.

Both Male leads becomes bodyguards to the female lead.

Both main-couples always bicker against each other.So there are hate to love relationships on both.

Someone wants to kill the female lead.

Both are mix of action and romance.

A good drama with suspense. ML and FL in both dramas have a misunderstanding of each other.
ML falls in love with FL. Slow-burn romance...

Both female leads are supporting actress or "nang'rai" who fall for cops.

In Nang Rai Sai Lab, the female lead goes to work with the cops on their case, while here the female lead tries to find an answer to her own personal mystery.

both are like a man who plays bodyguard, despite the resistance that falls in love with the main heroine