First Google search 'spontaneous human combustion'. It is a common cause of fatalities concealed by the govt. If you recognise it early you may be able to treat. You will need to determine the source of combustion (eg electrical, paper, gas etc) and use the appropriate extinguisher internally.
She's in love but I think you need to bond more so it doesn't feel like she's burning through your skin
When the temperature hit the negative degrees, it will be bone chillingly cold. If the skin is exposed to these temperatures, it can feel like you are burning because the skin can start to become frostbitten.
Mabey you need to get a new thermometer. it may be broken. or if you were working out then you could have burning up skin and feel hot and have no fever.
If you mean 'Alkali (s) , or base, it is the opposite of an acid. And like acids on skin, it can cause and feel like burns - it can actually cause chemical burns. I have had such an experience from hydrochloric acid personally, and it is very painful. So alkalis can cause chemical burns, and cause a burning feeling on exposed skin.
If in mineral form, they would feel as rough as any other rock. If put directly on skin, however, bases feel soapy (because they literally turn your skin into soap) and acids feel like a burning sensation (for a short time; then they burn out your nerve endings and you can't feel anything).
They have skin, so they feel like us
It depends. If you're touching something really hot, you feel like your skin is burning. If the object is really cold, you shiver. So, it depends.
Untreated shock would make the skin feel cold and clammy.
I fell like a burning or tingling sensation
It's dry - having a similar feel to leather.
Slippy
hard