At my college its the Sigmas and Sig Eps.at another college near us its the same thing.. sometimes I end up in conversations with my sisters or other fraterity guys that say that nationally thats what it is..but I guess it can't be if its not nationally looked at.

By no means am I an expert about this situation (as I am not a member of Tri Sigma OR Sigma Phi Epsilon) -

As others have said, there is no official brother & sister fraternity. The fraternity (or sorority) that you "connect with", for lack of a better term, can change from campus to campus, or even from year to year - the fraternity that you do ALL your socials with as you're in the chapter may become the "chapter no one is seen with" by the time you graduate.

And yes, I've seen this happen. :p

NO!!!

There is NO national bond between any NPC and NIC group. Please inform everyone who tells you differently that they are WRONG.

I don't know if my brother's university has Tri Sigma or not, but their Sig Ep chapter seems to do things with the KKG and AOPi chapters there.

I'm feeling this quote right now!

Me too, lol. I think I ranted about it awhile ago on here.

While in a sense, you may be right, this is not the case across the board. Unofficially, several groups with historical bonds refer to each other as "brother or sister" organizations. While this doesn't occur at the national level (most likely) and is nowhere in anyone's Constitution, it happens.

For example, Sigma Nus had a hand in getting Alpha Xi Delta started at Lombard College. Unofficially, many Alpha Xi's will refer to Sigma Nu as their "brother fraternity." Or something that effect. I'm pretty sure there's even something along those lines in the Alpha Xi pledge manual (or some historical document), but I could be wrong.

While in the sense that we don't have joint meetings and rituals and articles of governance, you're right, there's no national bond. On a historical level, I think you'd be wrong, however. Such a bond exists between several NPC/NIC groups.

Are Sigma Lambda Beta and Sigma Lambda Gamma constitutionally bound?

Maybe you should check up on NPC rules before you go acting like you know what you're talking about.

It doesn't matter who says what. There are no brother/sister official OR unofficial GLOs. Perhaps actually listening to the other NPC sisters, or maybe the actual Tri Sigma sister, you will notice you are wrong... if that is possible.

Perhaps it is you who doesn't know what you're talking about? NPC rules have nothing to do with this really. Historical bonds exist outside the rules and are not affected by them. That members refer to another group as a "brother" organization occurs. Everyone is aware of the historical connection. In that respect your rules are completely irrelevant.

Let me rephrase...there is no CONSTITUTIONAL bond. (I would have said that, but it was early in the morning & the OP didn't seem to be getting it)

There is a historical bond between ASA & Tri Delta (no dash). That doesn't mean we ever call them our "sister" organization. There is a historical bond between SAE & Alpha Phi Omega. That doesn't mean they call each other "brothers."

So you're saying they're not sister/sister, brother/sister or brother/brother? How about mom/daughter, father/daughter or father/son since one of the organizations is older?

Some do, some don't.

No, Kevin is right. Regardless of whether its official or not, it happens. A quick Google of "Alpha Xi Delta," "Sigma Nu" and "brother fraternity" turned up 44 hits along the lines of the following:

From the Zeta Theta chapter of Alpha Xi Delta: With the help of the men of the Sigma Nu Fraternity, the Alpha Xi Delta’s brother fraternity, they were able to organize their ideas and create a successful organization that affects women’s lives every day.

From the Beta Pi chapter of Alpha Xi Delta: The fraternity flower is the Killarney Rose, which characteristics include a light pink color, thornless, with a large bloom. It was chosen by our Founders to complement the white rose of Sigma Nu, our brother fraternity.

From the Atlanta Cobb-Cherokee Alumnae Association of Alpha Xi Delta: TBD: Social - March Madness Sigma Nu Social - Join us with our brother fraternity in Atlanta.

Google even took me to this post and this post here at GC.

So while there is no official relationship (and Kevin never said there was), he is right that "it happens" that some Alpha Xi Delta members refer to Sigma Nu as their "brother fraternity."

If it's not on the national websites, it's not official.