There is no law restricting the bachelors whether boys or girls to live together in a rented flat.
The association cannot object the owner to rent out the premises to bachelors.
If the society restrains the tenant from getting the possession of property then appropriate recourse can be sought from the court.
The MCS Act does have not provisions for “Prohibited & Restricted” areas in the Society premises.
The Mg. Committee (MC) has compulsorily to work under the provisions of the MCS Act and .IF.
The MCS Act does not provide for restrictions on “Tenants”,
THEN “Bachelor Tenant” cannot be prohibited (banned) from residing in a Society, even if for whatever reasons.
The inbuilt craving to formulate Laws to govern & control other members, lead to ignorant MC’s and GB General Body (GB), to pass “illegal & invalid” resolutions, for “Prohibiting /Banning Bachelor Tenant”, from staying in a Society. Such “selective & prohibitive” provisions /bye-laws created / amended under a “bye-law” approved /passed by the GB, is also “illegal & invalid”, leading to animosity and discontent in the Society, which also means “failure of the Cooperative Movement”.
AS IT IS, the Society or the MC or the GB is a “nobody” or say “does not have the “Capacity or Capability” to decide the legalities of such things for which there are various Laws available.
The Society MC or the GB is not “Lok Sabha” members or Parliamentarians who are empowered to pass Laws.
You can object the society's restriction to this and can even issue a legal notice to the society or to the members who harass you on this.
If some anxious members indulge in any illegal activity like spreading false rumours or trying to create nuisance or insult then you may even lodge a criminal complaint against them with the local police for initiating proper legal action against them.