Full Idea
A and B are the sole truthmakers for 'A and B resemble each other'. There is no need to postulate extra entities - the resembling entities suffice to account for them. There is no regress of resemblances, ...since there are no resemblances at all.
Gist of Idea
Entities are truthmakers for their resemblances, so no extra entities or 'resemblances' are needed
Source
Gonzalo Rodriguez-Pereyra (Resemblance Nominalism: a solution to universals [2002], p.115), quoted by Douglas Edwards - Properties 5.5.2
Book Reference
Edwards,Douglas: 'Properties' [Polity 2014], p.107
A Reaction
This seems to flatly reject the ordinary conversational move of asking in what 'respect' the two things resemble, which may be a genuine puzzle which gets an illuminating answer. We can't fully explain resemblance, but we can do better than this!