X, a rich old man, donated a house and lot to Y subject to condition that Y shall become a mistress of X. Said house and lot is owned by X and his wife Z. Y duly accepted the donation and she became a mistress of X. After two years Y left X and she eloped with her boyfriend. X got mad and he filed a civil action t against Y to recover the house and lot.

1. What is the character of the conract of donation? (valid, rescissible, voidable, unenforceable, void or inexistent) Explain

2.Can X recover the house and lot? Explain