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It had been a few days since Billy had formally claimed his Omega, and Steve was still reeling from the experience.
The two had just been cuddling on the couch when Billy had suddenly sunk his teeth into the other man's neck.
Now, the wound was mostly healed, leaving behind a distinct claiming scar.
...And Steve wanted to bite him back.
They were on that same couch when Steve leaned over. Billy didn't think much of it, even when Steve started nipping at his neck.
The nipping grew more and more intentional, though.
"What're you doing there, Harrington?" he asked quietly. Steve let out an embarrassing whine, earning a chuckle from his Alpha. "Oh my god, are you trying to claim me?"
"Sorry..." Steve muttered, backing away. Billy reached out and grabbed him, shaking his head earnestly.
"No apologies" Billy said firmly. "I'll allow it"
"Really?" Steve asked, his eyes widening in surprise.
"Yes" Billy confirmed, backing up and leaving his neck exposed. "But make it count"
So, Steve did as he was told.
It wasn't nearly as aggressive as what Billy had done to him. Hell, he barely even broke skin. But, that was to be expected of an Omega like him, and it was still enough to leave a small mark.
Billy went to the bathroom to cleanse the site with soap and water, just to prevent any infection and, when he returned, he found Steve looking awfully happy with himself.
"Now you're mine, too" Steve told him. Billy grinned.
"I like you being possessive, Harrington" he commented. Steve went red at this. "It's cute"
"Shut up"
"In your dreams"