Honesty is always the best policy. When you are alone with this person tell them you don't wish to continue on with the relation. If they ask why then tell them the truth. Reasons that are considered...
I think you are asking about "standard" air. It is 80 degrees F. dry bulb, 67 degrees F. wet bulb. (about 50% relative humidity). 29.92 barometric pressure. its a specific case!In common, design...