"I am so thankful for you ❤️," she wrote, tagging recording artist Farnum in the post.
Farnum shared his own post with Jaclyn at the same time, but instead of a short and sweet caption, he wrote a VERY lengthy letter.
"So for the last few months I’ve been pretty absent from social media & music, because sometimes real life comes in and rocks your world!!" He began.
"Mine has definitely been rocked for the better. I’ve been a pretty emotionless guy since I lost my brother, many can attest. However, I have met someone so incredibly out of this world, who has managed to crack through my icy shattered exterior and bring me back to life. I don’t know what I did for God to bless me with you, but lord am I thankful.
"The amount of rawness, vulnerability, compassion, understanding, fun, desire, and most importantly, the love that we have is unlike anything I’ve ever experienced.
"I don’t know where the journey takes us, but I can say with confidence that it will be a long and enjoyable one with you by my side.
"Thank you for being the incredible woman you are, I promise to be the best version of myself that I can be, for you. I love you mush."
We don't think her ex Jon will like this news at all! In September, he shaded the hell out of her new relationship on social media by mocking her photo with him.
Jaclyn even responded to it at the time, calling him "petty".