I haven’t seen the older shows/movies (albeit a couple Gen 3 short films I have), do they actually connect? :3

ps wtf at the shipping tag

Yeah, he was sold with Satin later on.

I think he was sold through a few different pamphlets, one he was sold WITH Satin.

In the toys?
 
“Tux ‘n Tails is so excited! He’s having a party and you’re invited! Today is the birthday of two baby ponies, and Tux ‘n Tails is planning a surprise party for them. It’s almost time for the party, so help Tux ‘n Tails put on his bow tie to make him look as handsome as can be for this special event. This fun-loving pony is not available in any store, so order now and catch the excitement!”
 
“Even in Dream Valley, where everyday is filled with laughter, a wedding stands out as one of the happiest days of the year. Today is Satin ‘n Lace’s special day, and she’s done everything she can to make sure it’s perfect. She invited all the Collector ponies to help celebrate the occasion. She even rented the Pretty Parlor for the entire day before, so everyone could have a professional grooming! Still, as busy as she was planning her wedding, Satin ’n Lace is relaxed and glowing with happiness today. And she finally gets to wear her gorgeous new wedding gown!”
 
?

Nope, Tux was Satin’s groom.

They were never really a pairing though, right? I don’t think they ever connected the two. Tux was just having a party and Satin was having a wedding.
 
Glory-Moondancer is probably the first.

the first true couple in MLP