Hangrid + Grester = Hartbig?

Grace and Chester have been together for a while now, despite the fact that Hannah has feelings for Grace.
Hannah finally finds Ingrid and falls in love, which helps her to get over Grace.
The two (supposedly) loving couples are always out on double dates and so supportive of one another.
But it's not always that easy.
When Chester goes back to his old ways of being an unfaithful cheat, Grace has no one to turn to but her best friend Hannah.
Will this bring back Hannah's past feelings for Grace?
How will Ingrid feel about her girlfriend and Grace becoming very close again?
See couples deteriorate but stronger relationships built...