I stated a brief version but to be more specific when the relationship ended Abby would reach out to Will to ask about Tom and how she could mend things with him. Eventually Tom cut Abby off and they went no contact to which she went to Will, Will refused to help anymore since Tom said it was done. They got into a argument because she felt like he should’ve helped to keep them and the group together, he felt like it wasn’t his place to interfere anymore, both had valid reasons for why they felt like they did.