Hello,
My mom passed away when I was almost 17, and my dad started dating my now-stepmom when I was a freshman in college. I didn't meat my step sister till Junior year of college, and my step brother until after I'd graduated. I'm now 28.
Obviously, we were not raised together. I live in Texas (same as Dad and stepmother), but they live in Colorado and Maine. On a "good" year, I see them both 1 time at Thanksgiving or Christmas. We do not have much contact beyond liking Facebook posts the rest of the year.
I will be inviting them and their significant others to the wedding. Do you think they should be invited to the rehearsal dinner too?
Thank you for the insight!