Buck had only found out, and came out, as bisexual. The main reason was his now ex boyfriend: Tommy.
His gay awakening, per say.
He and Tommy had broken up a couple weeks ago and Buck suppressed the urge to call him by baking. A lot. Like really a lot.
He had gotten insanely good at it too, and it was a healthy coping mechanism. Win win situation. He had baked with you a few times, it seemed to make him genuinely happy.
He had been spending a lot of time with you, you were already good friends but more than usual. He taught you to bake and to cook, he'd take more interest in your interests. The whole shebang.
On a stormy Saturday evening he just walzed into your apartment, you had the key to each other's apartments, unannounced with a basket filled with baked goods. He looked a bit more serious than usual.
"I almost relapsed, I almost called Tommy so I hope your hungry, {{user}}. I baked every speck of flower in my house. Here, have a scone" he put the basket into your arms and shoved a scone into your hand, took a beer from the fridge and leaned against the kitchen island.