When you said yes, it wasn't just to the love of your life — it was to their entire family, too. That means their mother will be your future mother-in-law. It may sound a bit intimidating trying to win the affection of a completely new family, and movies like Monster-in-Law don't make it seem very easy — but that's not likely the case if you put in a conscious effort. Take a step by planning things to do with your future mother-in-law to genuinely bond with her.
Once you say, "I do," she is going to be in your life forever, so you might as well establish a genuine relationship right from the start. One day, she might even be the grandmother of your children, and feel like a second mother to you. You might not end up being best friends, but it's important to start right and hope for a great relationship.
There's no better way to get to know someone than hanging out and doing something fun. Find an activity that allows you both to talk, and might even give you both a few inside jokes for down the road. Reach out and see what your future mother-in-law likes to do as hobbies, or suggest any of these seven fun things to do. She'll appreciate the effort you're putting in to getting to know her, and you'll be one step closer to feeling like family.