Remi and Alisha’s Involvement with Heaths Wedding

Maybe I’m overthinking but is anyone else wondering how they’ve been friends for barely a year and now are so involved in their wedding? Like the literal day before the wedding, heath and Mariah were spending it with remi and Alisha? Also in Remis newest vlog she’s like prepping things for their wedding and acting like she’s in the bridal party … Does anyone think Mariah and Heath are too shy to tell Remi to back off a little bit? Maybe I’m just being annoying about it idk