A new episode of How I Met Your Mother airs tonight on CBS! So, what is this broath, then?

Tonight at 8/7c, Ted makes the mistake of breaking an old “broath” he made with Barney. The episode description reads:

The gang try to break up Barney and Quinn after learning that the couple plan to move in together. Meanwhile, Ted and Robin argue over subletting her apartment.

Watch the promo:

So, what do you think? Will they really move in together?