Seethe quickly leaned towards his son and whispered in his ear. "You do realize she's twice your age? Right?".
Lightning Flicker chuckled and the whispered back at his father. "Mom is thousands of years old. You're only forty something."
"Good point." Seethe said only to feel Celestia jab him in the ribs once again. He turned to his wife and she mouthed "Do something."
Seethe didn't really know what to do. His son was of legal age and so was Rainbow Dash, its not like he could forbid the older Rainbow Dash from dating his younger son. At least with out receiving resentment from his son. Seethe mouthed back to Celestia: "I can't."
Celestia decided to take matters into her own hooves. "Lightning Flicker, may I have a word with you in the kitchen."
"Of course, mom." Lightning Flicker said rising from his seat.
He and his mother walked into the busy kitchen and went into the back where the trash was usually tossed away. They took stands across from each other and Celestia started the scolding quickly. Her expression was serious and her tone was sharp and blunt against her son.
"You're going to break up that mare out there." She ordered bluntly.
Lightning Flicker tilted his head back and laughed. "What?! Why would I do that?!" He laughed at his mother, still unaware she was incredibly irked at the moment.
"Because she's twice your age. She's a cougar!" Celestia scolded. Now, besides Seethe she was the second tallest pony in Equestria. When she made him into an Alicorn, (To give him resilience to physical damage during sex), he took the stature and bulk of a male alicorn. There are also some mental buffs to prevent mind control (Sadly with the right know-how they are bypass-able.) and to increase thinking speeds by creating long-range connections between every part of the brain. Every part of Seethe's, Celestia's, Lightning Flicker's, and Spring Song's brains was connected with every other part. Is his cerebral cortex needs to know another language and do math at the same time, it can. Simple and genius, no?
"Your probably a million times Dad's age, though? I find that to be very hypocritical, honestly." Lightning Flicker said returning Celestia's serious tone, with his added chuckle.
"Your father and I are immortal. When you reach the age thirty you will be too. Forever stuck physically at thirty. Even if you were thirty Rainbow Dash would be a decade older than you."
"Well I'm of age, Mom, technically you have no say in my life besides suggestions." Lightning Flicker stated bluntly.
Celestia gave him and annoyed expression and stalked off.
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Dinner was silent that night. This silence added to Silver Eagle's anxiety, Spring Song spent most of dinner trying to help his nerves. Celestia simply ignored her son only giving him sharp glances every so often. Seethe tried to preoccupy his wife, via kissing, hugging, and talk. Rainbow Dash had felt out of place all through out dinner. When it ended she and Lightning Flicker retreated to his bedroom, Silver Eagle went home, Spring Song went to her bedroom, and finally Seethe and Celestia went back to their bedroom.
"There's really nothing we can do about it. If they wish to be together, so be it." Seethe said coolly as he held Celestia and gently stroked her mane. "Our family isn't exactly the most traditional. Let Lightning Flicker do as he wishes, it won't harm him, us, or anyone. Not unless we let it, eh?"
Celestia smiled and looked up at him. "Hey, Seethe?"
"Yes, love?" Seethe asked with a smile.
"Why do you have such a easy-going philosophy on life?" Celestia asked as Seethe continued to stroke her mane. She reached out a hoof and ran it through his generally messy mane.
Seethe was caught off by her deep question, he stopped stroking her mane and thought a second. He contemplated his entire life style in that mere second. "You know.....all my life I've never many enemies, and the ones I've had I've resolved out problems with talk. Never really any conflicts, except a few hoof fights when I was younger, so I try to maintain a 'live and let live', 'very forgiving', and 'loving and tolerating' kinda life style." Seethe explained, resuming his stroking of Celestia's mane.
"That's a very interesting life. Just like what I taught Twilight." Celestia said. smiling faintly at Seethe. She moved her head closer to his and began kissing him. Slipping her tongue into his mouth. Seethe gave a light hum, alerting her to his pleasure. Seethe broke away from her and said with a superior level of glee.
"Well at least I know what I'm doing tonight, now." Seethe said with a sly sort of, wicked grin. He stroked her mane again and went right back to her lips. Driving her down fully onto the satin sheets and burying the Princess and himself beneath them.
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The morning after was something Seethe could never really master. Seethe, after a night of any sort of sex or high intensity activity like it, would generally be quite groggy. The high intensity combined with the length of the activity also has an affect upon his morning feelings. If he's up until one in the morning doing the equivalent of a mile sprint, yes he's going to irritable, tired, half-there five hours later. After two decades with the Princess of the Sun, he awoke at dawn.
That night had been a long lasting one. After an hour of foreplay Seethe had gone blind and needed his Seeing-eye Princess to guide him around the back lands of the sun goddess:
Seethe saw the final shapes and colors disperse from his vision. He now only saw darkness. He stopped his kissing and said quickly. "Blind."
Celestia sounded as if she was surprised. "Already?". Seethe felt her go for his neck with her lips. Warm wet sensations followed by the sound of puckered lips kissing flesh.
"Sadly, yes." Seethe responded, finding it continually difficult to maintain his composure.
"Well...usually we're able to get into a more intense bit before this happens. Fine, I guess I'll have to guide you a bit." Celestia said sighing and then giving him a pat on the head.
"A bit is an understatement." Seethe said with a chuckle trying to feel out the part of her body he was at. It was very fluffy but sort of firm. He guessed it was a wing. And one light nibble later his guess was confirmed when Celestia let out a light pleased gasp.
"Do that again...." She whispered in a barley audible voice.