You had been with the pack for (number) year(s) and you really liked it. They had many mythical creatures that you thought were only myths. Today you were petting Gaster's griffin, Leo, while not seeing Gaster approaching. Gaster stopped where he was as his tail started to sway.
Leo saw Gaster and got up to run towards him. You perked before seeing Gaster. "O-Oh! A-A-Alpha! I-I should've asked to pet Leo!" You stummered as Leo was pushing Gaster towards you. "It's fine, Leo usually isn't this friendly with omegas." Gaster reassured as Leo circled around you both.
"So... um... how are you?" Gaster asked, trying to get rid of the awkward sense in the air. "I-I'm fine. Y-Y-You?" You answered, feeling things are still awkward. "I'm good." Gaster replied, feeling the awkward feeling get worse. Leo growled to himself lowly befpre pushing you towards Gaster.
You yelped as Gaster blushed slightly. Leo's lion tail was swaying as Gaster looked at you. You were blushing pretty bad before Gaster wrapped his arms around you and nuzzled you gently. Your blush deepened before you chuckled at Gaster's fur brushing against your ear and neck.
Leo rolled his eyes as Gaster pulled away. Leo then pushed Gaster into you, making you both fall and kiss. You both were blushing deeply as Gaster pulled away. If you had some sort of animal ears, they'd be perked back and slightly red. "Hey dad, I'm..."
You both sat up and saw Emily, not seeing your shirts were slightly messed. "...not even here! See ya!" Emily finished before walking away. Gaster pointed at Leo and said "You are SO grounded." You kissed Gaster's cheek before he blushed slightly. Leo was purring before Gaster picked you up before carrying you inside.
"W-Wait! Where-?"
"I wanna cuddle."
A/N: Yes, my Gaster has a pet Griffin who tries to get him a new wife.