Full House

Similar type of set up with the main couple coming to live together because of a certain misunderstanding/deceiving, the girl likes the guy first while he still has lingering feelings for his cunning first love until he gradually starts falling in love with the meddlesome main girl.

For those that can not get enough Contract Romance.
In both dramas the couples end up living together due to circumstances. In both dramas, the couples sign a contract and enter into a fake relationship. Both dramas are done well and are in my top 20 all time favorites.
The personalities of the characters is different
Because this is my first life is a little more slow paced and thoughtful. Full House has more comedy.

It has that same feeling of simple love where you fall in love along with the characters.

Sun Fan is a stunt double who dreams of becoming a big star. When he suspects Fang Zi Hao, a famous singer, trying to steal his girlfriend, he beats the living daylight out of Fang. His attack against Fang incurs the wrath of Yu You Tong, who is a die-hard Fang fan. She mobilizes the fan base to attack him online. But to her dismay, instead of ruining him, the internet makes him an overnight star as people praise his skillful fighting moves. Because of one fight, four strangers suddenly become entangled in more ways than one.