Push through the odd beginning and make allowances for some of the script meanderings and you will be rewarded.
The cinematography is first rate.
There is a twist in regarding the 2ML that is handled well with sensitivity and understated use of flash backs and vague language.

(I have not seen this topic depicted in dramas previously and it prompted me to do a little research).

The friendship of the three main characters from childhood to the present day is emphasised and their different personalities are well defined by the actors.
I love that the FL has to self reflect on her motives and her reluctant acceptance of the role she can play in this trio of friends.

The budding love relationship of the two MLs is gently depicted in their actions rather than words. It lacks any sizzle but has a solid yearning feel.

The ML is slow to comprehend his feelings of love yet when he does he unambiguously takes action and the scene of coming out to his mother shows his deep caring and love for their relationship. He comes across as brave and protective and very straightforward.
The 2ML has returned, ostensibly, to renew his friendship with the trio but quickly realises his ulterior motive is to remain close to his first love. His past experiences have made him secretive and afraid of others reactions so he guards his identity from the ML.

A truly lovely BL with many layers and some fun scenes where Ching Lung fantasizes the two ML leads in two well known K-drama scenarios.

This is a short drama and has short episodes so I recommend binging.