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Day Two of the British Science Festival at Aston University and love is in the air. But first don't forget you can find our brilliant online science experiments and you can see the full Festival programme .

And so to love. Today we learn that the "cost" of falling in love is the loss of "two close friends." According to , from Oxford University;

"When people are in a romantic relationship, instead of having the typical five inner circle friends on average they have only four."

Or could it be people with fewer friends are more likely to want to find love?

Tonight is the event so many of us have been looking forward to, Dr Petra Boynton on the (sold out!) "" which is actually followed by a real speed dating event.

I met up with the good doctor this afternoon and she had this advice for those that can't make her talk. Especially when it comes to scientific sounding books about dating.

"All of this is explained mathematically or in terms of biology or in terms of evolutionary theory. But most people using these terms have no idea what they are talking about."

Instead of buying dating books she suggests just saying "hello" to a potential partner.

You can follow Dr Boynton on .

Unfortunately I won't be able to make her talk as I'll be filming another event. And we'll have more about that tomorrow...

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