And now it's reported that Cait and Sophia are planning to get married.

RadarOnline reports that Caitlyn Jenner plans to marry Sophia Hutchins, but that she's hoping to keep things low-key.

"They consider each other soul mates and freely admit they couldn’t imagine a life with anyone else at this point."

The two have felt a close bond, despite the hefty age difference between the 68-year-old Olympian and the 21-year-old hottie.

According to a report, the push to marry may come from Cait recently missing out on some major milestones with her former stepchidren.

"Caitlyn would have loved to have helped Khloé through the tough time in the delivery room."

Of course, it's been clear for a while that Caitlyn will never see Khloe's daughter, True Thompson.

"But the Kardashians have kicked her out of the family."

Ever since Cait wrote her tell-all book, the Kardashians want nothing to do with her. It's sad for everyone involved.

As for the wedding itself, it's apparently set for a bluff near Cait's Malibu home.

"Cait has a wedding planner to handle all the details."

The guest list will include close friends and family ... but no one with the name "Kardashian."

"This is a dream come true for Cait because her rejection by the Kardashians -- and even her own daughters -- had left her feeling isolated and suffering from a crippling depression."

Oh, that is heartbreaking.

"Sophia has changed all that."

That's so nice to hear!

Despite their age difference, the two have forged a powerful bond.

"She and Sophia have a lot in common."

Not only are both women trans -- Sophia transitioned as a teen, in college -- but they both hold conservative political views that often put them at odds with the larger trans community.

(Though Caitlyn is aware that Trump is devastating for trans rights and seems to regret that she ever supported him)

But Cait and Sophia have been practically joined at the hip for months, ever since they were spotted vacationing in Mexico last year.

"The age difference doesn’t seem to matter at all."

That is some very exciting news.

That said ... we're leery of hearing wedding plans, no matter the source, when the alleged couple has yet to confirm their romance.

There are plenty of good reasons to keep a relationship under wraps.

One, it's not necessarily anyone's business. Two, though Sophia has been Caitlyn's plus-one a time or two, she is not herself a celebrity.

Three ... a lot of people are going to have a lot to say about Cait allegedly dating a woman who's younger than most of her children.

If these two marry ... Sophia would be Stormi's step-grandmother, right? Even though she's only about a year older than Kylie herself.

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The closest that Sophia and Caitlin have actually come to announcing that they're dating is Sophia's reference to getting James Corden's "approval" on Instagram.

That's not the same as full confirmation, even though they seem incredibly close and are widely believed to be living together.

If this report of wedding plans is true, this is exciting, and maybe they'll announce it after the fact.

If so ... well, summer begins next month, and lasts until September. So that's the time frame that we're seeing for a summer wedding.

Best of luck to them both!