A Contracted Spouse for the Prizefighter by Alice Coldbreath

Theodora knows in her heart that she has star quality but sadly, no-one else in her theatrical family feels the same way. When her sister, the other half of their act leaves to get married, Thora is promptly axed from the bill and expected to take a back seat in the family business.
Clem Dabney, aspiring theatre owner and ex-prizefighter has built up his supper and song business as far as he can take it. In order to expand he now needs a theatre. When Thora appears before him with her outrageous proposition, he sees his chance and devil take the consequences.
Their marriage is purely a business arrangement, so Thora is not worried about Clem’s reputation and Clem is not concerned about Thora’s distinct lack of feminine charm. Now that’s all settled and out of the way, both agree things should be straightforward enough… Why then, is Clem acting the jealous husband when Thora finds herself among a throng of new admirers?