A contract is simply a promise between two parties that can be legally enforced. This guide to Contract Law explains concepts around contracts clearly and concisely, in an informal style and for ease of reading and understanding.The doctrine of promissory estoppel enables a person or an entity to recover damages which result from relying on a promise that was made and later broken. Under Texas contract law statutes, contracts involving marriage or "on consideration of nonmarital conjugal cohabitation," must be in writing. Our Houston business attorneys can help. Our legal staff has experience in the development of numerous contracts and agreements. Contracts in Texas can be a complex and difficult matter to deal with as a business owner. On the surface it seems straightforward. Under Texas law, a breach of contract occurs when a party to a contract fails to perform an act that it has expressly or impliedly promised to perform. Witness statements, correspondence, invoices, and other supporting records can help prove elements of a breach of contract claim.