SPOILER WARNING: This article contains major spoilers for "Elseworlds, Part 3," the final installment of this year's Arrowverse crossover.

The Arrowverse is about to get a little more Super. In the final installment of "Elseworlds," this year's three-show crossover, Clark Kent made a major announcement: he and Lois Lane are expecting their first baby. He then followed that up with a marriage proposal.

After Oliver, Barry, Kara and Clark returned Earth-1 to its proper state, Clark and Kara went home to Earth-38 and had a heart-to-heart. As Clark was building up to his big announcement, Lois cut him off and told him to be direct. At that, he came out with it: he and Lois had conceived during their trip to Argo City. Kara was overjoyed at the news, but was tempered when Clark explained the caveat. They would have to return to Argo City, where Kryptonians have no superpowers, so that Lois could safely carry the baby to term. They also planned to stay a little longer for the baby's safety, which means Kara will have to watch over Earth in his absence.

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Later, Lois and Clark returned to the Fortress of Solitude. Clark seemed lost in thought, so much so that he burned the dinner he was grilling for them. He began to explain where his mind was, but Lois interrupted him again to tell him to be direct. In response, he grabbed a piece of coal from the grill and squeezed it until it became a diamond. He put the diamond in a ring, then dropped to one knee to propose. Before he could even ask, Lois tackled him and said yes.

At the time of writing, it is unclear where Lois and Clark go from here. The two don't have a series of their own, though Lois actor Elizabeth Tulloch has approached a producer about it. Seeing as the characters will be off-world until the baby is born, they likely won't be around for the rest of Supergirl Season 4. However, considering the magnitude of "Crisis on Infinite Earths," it seems likely both Tulloch and Tyler Hoechlin will return to their roles for the event, should their schedules be clear.

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In the comics, of course, Lois and Clark have a son named Jonathan Kent, who has inherited the Superboy moniker. Jon is a rather new character, having debuted in 2015's Convergence: Superman #2 by Dan Jurgens, but has risen in popularity in DC Rebirth titles like Super Sons.

The Flash returns from its winter hiatus on Tuesday, January 15, with Supergirlcoming back on Sunday, January 20 and Arrow on Monday, January 21.