Does your heart go boom?

Pondering the delicate nature of attraction last night, I was very happy to have Helen Love's Punk Boy pop into my head:

Does your heart go boom when he walks in the room?
Do rainclouds scatter and fall?
Do you feel yourself sigh as he passes you by
Or do you grow a hundred feet tall?

D’you go bang shang-alang, every time you see him?
D’you go bang shang-alang, every time you’re near him?
D’you go bang shang-alang, every time you hear him?
If you don’t, he’s not a real punk boy,
If you don’t, he’s not a real punk boy,
If you don’t, he’s not a real punk boy at all

Heaven knows I don't have a wide frame of reference, but at different points in my life I've encountered extreme loveliness with which I had all the sexual chemistry of a damp flannel, and lovely-but-damaged which could create fireworks at fifty paces from just a glance:

'It was then she understood how dough feels when it is plunged into boiling oil.'
Laura Esquivel, Like Water for Chocolate

I guess the 'right' person would be a mixture of the dependable loveliness and the sparky chemistry. Looking at the couples in my life who work so well together, that's what I see: one couple who have been together for ten years and are currently supporting each other through great grief, a couple who have been together through seven years of 'thick and thin' and just married in the most touching and romantic ceremony I've been privileged to attend, another newlywed couple who have quite an age gap but totally belong together, my parents - thirty-one years on the clock and still holding hands in the street, and even a friend who has just begun to fall for her new boyfriend. It's possible. It happens. I must remember that.