Most Helpful Guy
I've experienced that. I don't know.
Maybe u try to hold something in around them, and it hurts.0
Most Helpful Girl
Not even kidding but hormones. Mostly oxytocin, the 'cuddle hormone'. A bit of adrenaline too, mostly when it comes to arousal be it sexual or more aggressive. Both are released by either the pituitary gland or adrenal gland, so when you get that pain in your chest, it's mostly a rush of those hormones being release. Either that, or withdrawal of less of them being released than previously.0