For months now, rumors that Khloe Kardashian and Tristan Thompson are back together have been circulating non-stop on social media.

Now, it looks it might be time to break out the champagne and celebrate, as those rumors have officially been upgraded.

Yes, fans are now convinced that Khloe and Tristan are engaged!

The source of the rumors is a new set of photos of Khloe and Tristan in which she's holding his hand and sporting a massive, pear-shaped diamond on her left ring finger.

Fans were excited about the public hand-hold, which more or less confirms these two are back together.

But they really went nuts over the rock on Khloe's commitment finger!

The ring can also be seen in photos from Khloe's recent 36th birthday party.

 “Can we talk about that huge rock on her ring finger please?!!” one fan commented on her Instagram page.

“The ring sorry I mean the ROCK," another wrote.

For what it's worth, Tristan posted a birthday tribute to Khloe on Instragram, and he sounded very much like a man who had just proposed or was about to propose.

"I'm wise enough now to know, you came into my life to show me just what it means to be an incredible person," Thompson wrote.

"I appreciate how I am able to learn from and grow because of you," he added.

It was the part about learning and growing that particularly caught fans' attention.

As you'll likely recall, Tristan was caught cheating on Khloe several times over the course of their first two attempts at a relationship.

Growth and learning would likely be two big requirements in order for her to accept a proposal from the Cleveland Cavs star.

Khloe and Tristan have done an admirable job of maintaining a healthy and amicable co-parenting relationship despite his past indiscretions.

But we think it's safe to say that his gushing birthday ode sounds like it was written by a smitten fiance, not a friendly co-parent.

At this point, there's really no denying that Khloe and Tristan are once again an item.

But the engagement? Well ... that's not as assured as some fans seem to think.

It's worth noting that Tristan loves gifting jewelry, and he has bought diamond rings for Khloe in the past.

So it could have been nothing more than a lavish present in celebration of Khloe's birthday.

But coming on the heels of a public display of affection and several months of reconciliation rumors?

Yeah, we hate to give in to our hunches too much, but something tells us these two are planning a wedding!

The reaction from fans is sure to be mixed, considering Tristan's past infidelities.

But Khloe's no fool, and if she's willing to extend her trust to him a third time, we're sure he's earned it.

In that spirit, we'd like to be among the first to offer our congratulations to the happy couple!

We'll be expecting our invitation in he mail any day!