As far as I'm know they were both working titles: initially 'Sex Symbols' when the track was first demoed in January/February '97 and later 'Love Scenes' when it was first played live in October '97.
Seductive Barry was a working title too - they used the suffix/prefix 'Barry' on a lot of songs before arriving at final titles as some kind of band in-joke (see also Barry Crusoe). I guess after they'd performed it as Love Scenes they decided they preferred the working title. So the lineage must have been Sex Symbols > Seductive Barry > Love Scenes > Seductive Barry.
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"Yes I saw her in the chip shop / so I said get yer top off"
Did that stem from My Legendary Girlfriend when they were looking for a Barry White/Pet Shop Boys hybrid sound and subsequently stuck whenever they came up with an instrumental that sounded in a similar vein?
