Re: Late 20s and taking in an in-law
This is a poor decision. Your MIL is too young to need to live with someone, and in a year or so could even start dating again. If she does, then you'll be in the way, and she won't want you around. Regardless of that, this is a huge stress on your marriage, and there is absolutely no need to move in together. In 20 years or so, perhaps having her live with you would be okay, if she needs some assistance. Until then, though, she doesn't - and so soon after your FIL's death, decisions are being made based on emotion, not reason. Don't. Do. It.
Love is an ideal thing; marriage is a real thing; a confusion of the real with the ideal never goes unpunished. - Johann Wolfgang von Goethe
CELIBACY IS NOT HEREDITARY.