Speculation: Husbando does not want Mom and Baby to share a language he doesn't speak because it messes with his ability to control his wife and future kid.

Advice: Go back to Ireland before you have the kid and do not return to the US. with luck this entire man will not follow/stalk you back to your home country. With even more luck, he'll get distracted without future kid right there reminding him they exist and fade out of your lives as if he does not exist.