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There are two frameworks in current day physics:
a) the classical framework with classical mechanics, classical electrodynamics from which emerge thermodynamics explained by classical statistical mechanics. The term liquid, belongs to this classical framework of thermodynamics. There exist classical molecules in this framework, obeying classical statistical mechanics . Boiling belongs to the emergent thermodynamic description.
b)The quantum mechanical framework, with quantum electrodynamics . Elementary particles, atoms and molecules are described in this frame differently than the classical frame, and the classical frame emerges from this underlying quantum model. The term "bond" belongs to this framework.
Confusions and sometimes paradoxes arise when terminology belonging to one framework is mixed with the terminology of the other.
The hand waving quantum picture of the condition of molecules in a liquid is based on the orbitals of the electrons of the molecules, which allow attractive forces to appear between molecules and quantum mechanical states to exist where the molecules are caught in a shallow collective potential well. Depending on the particular energy the quantum mechanical states may collectively show a liquid phase, but it is not bonding, as the energy levels are practically continuous.
Yes, with the boiling ( classical phase transition) the average temperature is such that the molecules acquire energy and exit the shallow effective collective potential well into the classical gas phase.