Relationsnack 

When one is not ready for the whole relationship but just hungry enough for a snack. A smaller portion of a relationship. It may include any part of a relationship for example: good conversation, hanging out, sex, friendship, group gatherings and dates.

As goes with any snack it has an expiration date. Best if this is agreed upon by both parties. As no one wants to find out the relationsnack and expired unexpectedly.

Relationsnacks don't always spoil sometimes they turn into Relationships.

One should try as many relationsnacks as possible to truly find the relationship you want.

Guy: Turns out she was still in love with her ex.

Other Guy: I guess you were just a relationsnack.

Relationsnack by TheProfitOfFury February 28, 2011

relationsnap 

A relationship that goes no further than a streak or conversation on Snapchat.

Dang, I wish I could get to second base with Michelle, but we only have a relationsnap right now.

relationsnap by Thepencefence November 15, 2016

symbiotic relationstache 

the relationship between two men in which they spend their time and resources in an effort to better their 'stache and the 'stache of their counterstache ('stache counterpart).

yeah, they have a symbiotic relationstache.

symbiotic relationstache by CG Mudbone December 1, 2010