TIINAL (the internet is not a lawyer). Get legal advice from a lawyer. Inform investor B, get a referral from investor B for a lawyer. My gut instinct is no, n

TIINAL (the internet is not a lawyer). Get legal advice from a lawyer. Inform investor B, get a referral from investor B for a lawyer. My gut instinct is no, nothing was signed, there is no contract, but there may be an intent that assigns some share of cost for the failed partnership, but I doubt it. But IANAL so that is not legal advice.