Feel good rom com with typical storyline. Although it is predictable but it works with the known and tested pairing of Zhang Han and Zhao LiYing who previously worked together in Boss and Me drama. The chemistry and ease of seeing the two intereact is gem. Furthermore this time Zhang Han's role, Si Yi is not as cool or cold as his role in boss & me. You get to see the two leads stay together as house mates, communicate, fight, laugh, drink, sing and even get tattoos together. Back to the storyline LiYing's character, Siu wu believes there is a love formula and works tirelessly on the Math to prove this and in finding the perfect match. Enters the other guy, Jung Il woo in his role as the boss who invests in this project as potential for perfect love mobile app. He also then develops feelings for our main heroine. (my qualms is i dont quite know when he fell for her, it felt slightly premature for me). Theres the other girl linked to both men who i wont spend much time talking about cause i dislike the character. Anyhow the main problem is the formula generated the boss as the perfect match which makes Siu Wu confuse to continue in her faith in the formula or her heart pounding for her house mate and friend, Si Yi. The last scene when they make up is my favorite. Nice to see when the girl makes the move.. Lol watch and you'll know what i mean. The story like i said may not be anything particuarly original or memorable. Yet it avoids cliche types of melo or angst which was refreshing. It concentrated in giving us great interaction between the two leads who carried the movie and made it a warm and enjoyable 90 minutes.