Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | The Husband Contract | 2025 | J.S. Cooper | Buy |
| 2 | The Enemy Contract | 2026 | J.S. Cooper | Buy |
The Billionaire Contracts series by J.S. Cooper uses contractual arrangements as the foundation for its romances. The Husband Contract kicks things off with a marriage-of-convenience setup where a billionaire needs a wife and offers a deal that is hard to refuse. The catch, of course, is that neither party expected real feelings to get involved.
The Enemy Contract follows with an enemies-to-lovers angle, pairing two people who are forced into an agreement despite their mutual hostility. Cooper keeps the pacing brisk across both books, and the contract premise adds structure to the romance without making it feel formulaic. This is one of her newer series, with the second book releasing in 2026, and it fits neatly alongside her other billionaire romance titles.