I'm going to keep this as short as possible.
Basically I am one of those people that rightly or wrongly is super aware and worried about potential child abusers etc. Not in such a way that I've ever outwardly suspected anyone but I'm very protective for this reason.
I've recently been getting to know someone and in that time he has let slip two things that have now seriously made me think I should not continue with a friendship/relationship. Though I fear I could be over reacting given my paranoia. One is that in an old job something was found that somehow could have been perceived as child porn
but it was just a joke email and no charges were brought. The second is that when he was younger he was accused of abusing a younger female relative but it was all swept under the carpet and only happened because the accusers mother had a mental illness. Though he isn't in contact with any of his living family 
I probably won't update with any extra info but I basically want to know is my reaction to run away reasonable or am I being paranoid and weird?