Love Triangle?

uke's bff has some feelings for him, but it's not exactly a love triangle (づ￣ ³￣)づ

Technically: uke’s bff has feelings for the uke and Seme’s bff has picked interest towards the uke.
The uke had feelings for his bff since forever, and the bff too had/ has feelings for the uke, but neither both confessed-
The bff said that he’s ok just staying by his side him,, tbh I want seme’s bff and uke’s bff to be in a couple (≧∀≦)

To put it simply, Uke had a crush on his "straight" bff but gave up. He moved on to Seme and were already going strong when the "straight" bff realised he wasnt as straight as he thought he was. But he realised it too late so no, not a love triangle.