sentences

Hello,
Could you tell me the meaning of this sentences. they are from an articule which talks about 'Love map'.

it says:

'Nature has wired us for one special person'.

'we are not hooked, unless enough of the right bells ring'.

'when all the elements click into place, we fall in love'.

Thank you very much

[Tdol]

'Nature has wired us for one special person'. - we are programmed to love one person in particular

'we are not hooked, unless enough of the right bells ring'.- we do not fall completely in love unless enough of the things we are looking for are met

'when all the elements click into place, we fall in love'.- we fall in love when all thew things we want are there