SEE ALSO: Lee Young Ja finds love after 35 years in the industry, confirming romance with Hwang Dong Joo

The two actors, who became thick as thieves after meeting on the set of 'School 2013,' proved that their friendship remains strong as ever. It's been revealed that Lee Jong Suk attended Kim Woo Bin's fan meeting which was held this past Sunday at Kwangwoon University's Culture and Arts Center. As it was an event where Kim Woo Bin celebrated his birthday as well, Lee Jong Suk's surprise visit was surely the best gift!

Kim Woo Bin welcomed his friend with smiles, almost as though he expected the visit! This was probably due to the fact that he had paid a surprise visit to Lee Jong Suk's fanmeeting last time, so knowing his friend, he perhaps thought that Lee Jong Suk may decide to return the favor!

Doesn't their bromance just warm your heart?