Context: My partner and I have been dating 2 years, and for over a year of that they've had a FWB that started out as a hookup. Well, for the past few months their relationship has grown and a few weeks ago they officially started dating.

I've met him (the new boyfriend) a few times, but always in group settings, and not since their relationship officially started. And from those interactions, and my partner's stories about how he treats them when they're together, I have nothing but respect for the guy. He's been treating my partner right, and that's all I want for them. I know I'm not *required* to get along with him all the time but I would like us to be able to hang out. Honestly I think I'd like to make friends with him. We have a lot of overlapping interests that my partner doesn't share. I also really don't want him to feel intimidated because I'm the already-established boyfriend.

Not necessarily looking for advice, but I'm a little nervous and could use some encouragement. I've been non-monogamous for years but welcoming a new member into my polycule is something I haven't experienced yet.