"This Valentine's Day you'll only be 5-months-old, but I feel like I've loved you forever," she writes.
After finding out she was pregnant with baby Cam, the TV personality began writing letters to him and hasn't stopped since.
She continues, "I have wanted to be your mommy for as long as I can remember. Nothing in this world could ever compare to the way you make me and your Daddy feel everyday! Words can't even begin to express how much more Beautiful you make our life together."
The 32-year-old also reveals she's been keeping a handwritten journal since her July 2011 wedding with Nick — so that she can share all her memories with her future children.
"I wrote about how Nick proposed, our wedding, our first home as a family, our adventures together, and how we are as people and as a couple...," she states, adding, "How our Love makes us stronger 'together' and how we can't wait to share our life with all our little ones someday."
Notice anything interesting? The phrase "little ones," perhaps? Looks like Vanessa and Nick, 39, could be giving Camden a little brother or sister in the near future — and even more after that!
“Three is the magic number,” Vanessa has said in the past. “We would love to, ultimately, just have them be happy and healthy, but if I had a choice, I’d have two or three boys, then a girl.”
To see her full handwritten note, click here.