New Significant Others

That is a tricky question, but my initial thought would be that yes, you should let them bring their new SO. I don't know as much about etiquette as the other posters on this site, so I would wait to see what they have to say.

I would.

If that happens, no you don't have to invite them but it would be nice. However, you definitely DO have to invite your guests that have gotten into relationships before the invites are sent (but it seems you've already done this).

You are correct, it's the gracious thing to do.

We're giving anyone over 18 a +1 (writing "and guest") and only naming significant others if they're engaged or have been dating for several years

Caitlin, ANYONE in a relationship is a social unit and should be addressed as such.

It's the polite thing to do, but I think everyone understands if you can't.

Agree with @Mrs. Fall Bride even if it's an UO

Let them bring their date. This is why you should always plan for every single guest to have a date.

Caitlin, anyone in a relationship for any amount of time needs to be addressed by name. Not to do is so is rude.

I dont agree. If someone has been dating someone for a week or two you might not even know that person's name! I assumed every person I invited would at least bring a date. I only made out invites with the couples names if they were known to be a couple.

If you can afford to give everyone a plus 1 (money and capacity alike), then that would make it all much easier. If you can't then I'm sure new SOs would understand the invite was out before they were in the picture.

Related: I began dating H after he had already RSVP'd for 1 to a wedding. I was fine about not going.

I'm actually really glad I didn't name significant others because a few days after my STDs went out a good friend of mine broke up with her boyfriend. If people are in a stable relationship I'm naming them but I'm not going to name someone who's only been in the picture for a matter of months.

ETA: I should mention that we're inviting a very limited amount of non married guests without a long term significant other. FH's family is huge so our guest list is mostly comprised of family and I think I only wrote "and guest" a few times, most of which were for 18/19 year old cousins

I definitely agree with @MTMA, all SOs get addressed by name. FH and I got a STD for a wedding of of some college friends who know both of us and know that we are a couple (who had recently gotten engaged when the STD was sent). It was addressed to FH and Guest, and it really hurt me feelings that they didn't include me by name. FH is closer to them than I am, but still, I've known them for years, and they've known about our relationship since it started 3.5 before they sent STDs. Even if we hadn't been engaged, it still would have hurt me and made me feel unimportant.

@fall, in your case I would definitely name you. The only cases where I put "and guest" were when I did not personally know the significant other. If I have met them obviously it's serious and/or I am friends with both people. In the case of my good friend I personally didn't care for her SO and thought things were on the rocks so I left him off and allowed her to pick whomever she wants to bring. In her case it was a good thing because she is still welcome to bring a guest even though her original SO is out of the picture.

"I'm actually really glad I didn't name significant others because a few days after my STDs went out a good friend of mine broke up with her boyfriend. If people are in a stable relationship I'm naming them but I'm not going to name someone who's only been in the picture for a matter of months. "

Then you're comfortable being rude to your guests. Most of us like to be polite and follow the rules of etiquette.

Thanks so much for the advice. I was a little taken aback when I realized that between now and wedding, I may need to add more people due to this issue. We'll see. If I can, I do want to be gracious. If I can't, I'm not going to sweat it.

SO are only invited it they have been together a year or longer to our wedding.

@Trish, that is a terrible way to treat your guests. Please reconsider. Any couple must be invited together. They are part of a social unit, and social units cannot be split up like that. Plus, it is just straight up crummy to ask someone to celebrate your love while you shit on theirs.

My bridesman just got into a relationship with an ex. It was very unexpected, but we're getting ready to send invites out and I asked him if he was comfortable with me inviting his boyfriend as his plus one. He said it's too soon and didn't want a plus one at all. Every relationship is different but it's important not to disregard new ones.

We only delt with a single guest getting a new boyfriend before invites went out, so I put the boyfriend's name on her invitation when I addressed it. I would think that so long as your final numbers haven't been turned in, yet, it would be reasonable to reach out to the no longer single guest and ask if he or she would like to bring the new SO.

Similarly, we delt with a situation where a couple on our guest list gave birth to a baby after our invitations went out. The kid wasn't born, yet, so we didn't have a name to put on the invitation. They hadn't RSVP'd by the deadline, so when I reached out, I let her know that I had no idea where they were at with the baby going out in public, yet, but that it was a kid friendly wedding and the baby was also welcome. Maybe that's a little different because obviously a newborn doesn't take up a seat or cost you an extra plate of food, but I feel like it's an adjacent concept. The family member came into to world after the invitations were sent, and he was extended an invitation after his existence became known. Just like an SO maybe wasn't in the picture when invitations went out, but it would be polite to extend an invitation if you find out the SO exists before your final headcount is due.