Gigi Hadid and Joe Jonas have only been dating for a few months, but at the rate they're going, we wouldn't be surprised if they got engaged by the end of the year!

On Saturday night the lovebirds went out to dinner in West Hollywood, and they had just returned from a romantic vacation in Tahiti. That might explain why they look a little bit worn out in these pics! Gigi and Joe posted a number of snapshots from their tropical adventure, and it seems like they had a blast in the South Pacific. Gigi Instagrammed the shot below and wrote, "my pre-fashion month vacay > missing this view already!"

The week before that we snapped the duo at Taylor Swift's concert, and though Gigi recently told HELLO! magazine that the two are moving slow, we aren't buying that! "We have been friends for a very, very long time - since I was 13 years old - so we are just taking step by step," she told the mag. Funny, because a source told Hollywood Life that Joe already thinks she's the one! "Joe has been telling friends that he wants Gigi to be the mother of his children," an insider told the site. “He is head over heels and hasn’t loved someone more. She is it for him.”

We can see why!