Chen Bolin finds out about Song Ji Hyo and Gary's relationship and he is not happy!

Song Ji Hyo's partner on the Chinese 'We Got Married' is jealous of her and Gary's relationship. On March 29, ET Today reported, "Chen Bolin did not know anything about the 'Monday Couple'. He just found out about it recently."

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Song Ji Hyo and Gary have long been known as the 'Monday Couple', and their romance is ongoing on 'Running Man' despite her love line with Chen Bolin in 'We Got Married'.

Chen Bolin commented, "Honestly, I just recently found out about the presence of the 'Monday Couple'. It's the past, and was started before she met me so I'm not too concerned, but I am a bit jealous." But then he quickly changed his mind as he added, "Actually I say I'm okay but it's still on my mind like this so yeah, I think it does bother me."

Uh-oh, is this a sign of a love triangle? Someone's very jealous!