Stockinette stitch and increase

I am working on something that is stockinette stitch with increases. I am messing up somehow and getting really frustrated.
The pattern (a heart shape) starting at the bottom, CO 3, purl 1st row, 2nd row, add one stitch, knit add one more stitch and decrease. 3rd row purl. I keep getting a hole.
How do I do this increase???
I’m still a newbie.

increase…not decrease!!! No decreases…just increses

What kind of increase are you doing?