There most likely were a few people—a part of Senator Amidala's security detail—who knew of the two's relationship. Most notably, Gregar Typho, captain of the Royal Naboo Security Forces during the Separatist Crisis and the Clone Wars and the former queen's head of security, was most likely aware of the union.
This means that although Anakin and Padmé tried to hide their love throughout Star Wars, several of their closest friends, including Ahsoka, Rex, and Obi-Wan, knew about their relationship but preserved their secret.
That changed by the time of their next meeting, in Star Wars: Episode II - Attack of the Clones, when another 10 years had passed. It was at this point — when Anakin was 19 and Padmé was 24 — that the two developed genuine feelings for one another and married in secret.
While their affection had to remain hidden, the two kept in frequent contact, even throughout the Clone Wars. But despite this, Anakin found out that Padme was pregnant only a couple of weeks before the twins were born.
He would have been in his 30s for most of Rebels. He was in his 40s during the original trilogy, 41 standard in 3277 (Rogue One, ANH), and 45 when he died in 3281.
Anakin Skywalker's birth mystery is solved - his mother, Shmi Skywalker, reveals that there was no father and she can't explain what happened. Qui-Gon Jinn believed that the Force itself created Anakin in Shmi's womb, making him the Chosen One who would bring balance to the Force.
Padmé was born in 46 BBY (Before the Battle of Yavin) and Anakin's miraculous Force-created birth came in 41 BBY, so Padmé was five years older than him. They did not meet until Star Wars: Episode I - The Phantom Menace, which took place in 32 BBY.
Before Padmé's death, she still believed there was still good left in Anakin, and that one day he could be redeemed. During Anakin's time as the Emperor's enforcer, he continued to suffer from grief over Padmé's death, and guilt over his supposed hand in it.
Did Padme ever sleep with anyone before Anakin? It is theoretically possible, but highly unlikely. She did have feelings for Clovis, but that relationship didn't really go anywhere and there really aren't other romantic prospects we know about.
It's possible that Jedi Masters Yoda and Mace Windu always knew about Anakin Skywalker's secret relationship with Padmé Amidala, and one particular Star Wars: The Clone Wars episode provides proof.
Obi-Wan couldn't help wishing Anakin the happiness he had been denied, and therefore, he decided to keep the marriage between Padmé and Anakin a secret. There is a tragic irony to this because, in truth, Obi-Wan shared Anakin's greatest weakness: attachment.
However, when they next met in Star Wars: Episode II – Attack of the Clones, Anakin and Padmé's feelings for one another grew into something resembling love, and their wedding at the end of the film solidified their relationship as one of the most important romances in Star Wars history.
Han Solo marries Princess Leia and they have three children: twins named Jacen and Jaina, and a younger son named Anakin. Luke reestablishes the Jedi Order, marries a non-movie (but fan favorite) redheaded Force-wielder named Mara Jade, and they have a son, Ben Skywalker (named in honor of Obi-Wan “Ben” Kenobi).
Rumor had it that his mother was Palpatine's Umbaran aide Sly Moore, who had impregnated herself using DNA from an undisclosed source. Regardless of the veracity of that report, Triclops was regarded as the true son of Palpatine, both by himself and the few high-ranking officials who were aware of his existence.
Following Palpatine's final defeat and her own resurrection, Rey adopts the name Rey Skywalker to honor her mentors and their family legacy and renounce her lineage. As the last remaining Jedi, she makes it her mission to rebuild the Jedi Order.
How old was Anakin when Luke and Leia were born? In canon, he was 22 (he was born in 41 BBY, and Luke and Leia were born in 19 BBY). In Legends, accounts vary saying he's either 22 or 23. Interestingly enough, he was around two years younger than Ben Solo was in the TLJ flashback were Luke reads his mind.
Anakin Skywalker was 22 years old in Revenge of the Sith, a crucial moment when he falls to the dark side and becomes Darth Vader. Darth Vader was 44 years old when he confronted Luke on Bespin in The Empire Strikes Back, attempting to seduce his son to the dark side.
At some point after his transformation into the armored Darth Vader, Amidala's husband, the fallen Jedi Knight Anakin Skywalker came to visit the mausoleum, stricken by grief and remorse for his part in her death.
The subtitles and script show some of Padme's final words to Obi Wan as “There is still good in him.” Every time I watch this I swear she says “Obi Wan... there's quite a name.” I have always thought of it as her recognizing him for everything he has done over the trilogy.
