Responses
Bc he felt like something was being cut out of his life the concept for the photoshoot was ‘imagine you’re with someone you love and you can see them anymore’ he cried thinking of joowon and when he looked at the picture it basically trigged his emotions remembering the concept and SPOILER he later explains that he felt like something was being cut out of his life

Since ch 70 or 75 I kept saying in the comments that I knew Haesoo was gonna go back to Jowoon and that Taku didnt deserve this cause he's a sweetheart. And now look at this...he's crying bc he only now realised how much Taku loves him, but he still has feelings for Jowoon...If you ain't gonna take Taku I will ( ̄へ ̄)