Tim Tebow and Olivia Culpo have been linked together for months, but there appears to be a cloud of mystery behind their relationship.

Keeping their courtship a secret is fine, but there isn't a single picture of the two of them together on either one of their social media sites. Last month, it was revealed that the couple has been an item since September, and that Tebow is "super into" Culpo and "writes sweet notes" to her, US Weekly reported.

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Though he's "super into her," you wouldn't know it if you went on Tebow's Instagram page. There's no rule that says couples must constantly flaunt the fact that they're dating on social media.

In fact, it's a breath of fresh air to see a high-profile couple stay private about their personal lives, especially with people like Khloe Kardashian making headlines for her love triangle with Lamar Odom and James Harden on a daily basis.

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Still, the lack of photographic evidence of Tebow and Culpo being in a relationship together is a bit strange. With Thanksgiving coming up, Tebow has been enjoying family time based on his Instagram posts, but Culpo is nowhere to be found.

The former Heisman Trophy winner took a group shot with his siblings during a friendly football game and has been sharing happy photos of his niece Brynn, who is also his goddaughter.

A photo posted by Tim Tebow (@timtebow) on Nov 19, 2015 at 5:03pm PST

A photo posted by Tim Tebow (@timtebow) on Nov 12, 2015 at 7:27am PST

As for the former Miss Universe, she is frequently using Instagram, but has also curiously left off any snaps of her and the former NFL quarterback. Culpo also enjoyed some family time sans Tebow as she dined at her family's restaurant in Boston and then enjoyed brunch on Sunday.

A photo posted by Olivia Culpo (@oliviaculpo) on Nov 22, 2015 at 12:42pm PST

A photo posted by Olivia Culpo (@oliviaculpo) on Nov 22, 2015 at 4:28pm PST

Perhaps their social media silence could have to do with Culpo's breakup with longtime boyfriend Nick Jonas, which occurred in June. Culpo wrote about being "heartbroken" shortly after the relationship came to an end and perhaps she's taking it slow with Tebow.

For now, Tebow and Culpo remain as arguably the most high-profile secretive couple out there.

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