“Their baby talk drives me crazy”

My best friend and her boyfriend hangout 24/7. On top of that already annoying fact, they both speak in baby voices to each other pretty much all the time, which is what I really have the problem with.

It is so unbearably annoying that I become physically mad about it. I become shaky and my heart beats faster when I’m around them. Her cousin thinks its funny and has now joined in with the baby talk. I don’t know what to do because I’m glad that she’s happy with this guy but at the same time, I was to jump off a building when I’m around them.

I feel like I’m going to explode soon, but I don’t know how to say something without sounding like a bitch. I’ve kind of hinted at the fact that I don’t like it, but they don’t stop.

What do I do?