I had a colleague with that syndrome. He was a horrible man. Stole money off the secretary's desk, spoke to his students about the color of their panties, and was a total sponge, never paying his way. Not a great teacher or person at all. I had changed my name that year so at the end of the year he asked me whether or not I thought he was a good Christian. I let him have it. lol. He didn't get his temporary contract renewed and moved on to a private Christian school. The board chairman phoned our school about 6 months into the year wondering what was up. My principal let loose as well. For some reason, his contract wasn't renewed there either.
OTOH, I know a lot of really wonderful Christians. Another colleague was ans is one of the warmest nicest people I've ever met. Like me, she never mentioned faith at all.
It is true that we should never generalize about people of any faith, race, creed or color.
Your little story reminds me of a custodian I met at work on the second shift, because I stayed at work after my regular hours to do homework related to a school program that was related to my job. As the story goes, he got a crush on me and he loved talking about sex, but I didn't. He even told me my marital problems were because I was not having sex. He also stole slips out of my drawer.
Once, many years later, he came over to my house and asked if I wanted my slips back and my husband was standing right there. But my husband could not care less because he knows I would never go with another man.
This man was a fundamentalist Christian and he felt bad that he was having sex outside of wedlock and called it fornication and thought he was going to hell, so I know he had a conscience. Last I heard he wanted to marry his girlfriend but I don't know if that ever transpired. He was a very good Christian so I would never judge him just because he had these sexual urges.
Another Christian, an upright Methodist minister's son, was a man I dated back in college and he tried to get me to have sex then but I declined. Then about 20 years later, he saw me walking in a neighborhood near where I worked and struck up a conversation with me. At that time I had probably been married about 10 years and he had been married himself for 30 years, but he had had this crush on me all those years. So we met for lunch and he tried to get me to go hot tubbing with him, and of course I said no. Then he wanted me to go camping alone with him and I said no. I told my husband I was considering going camping with him and he did not shrug a shoulder. You would think my husband would have been a little concerned.
Of course all Christians are not like that. Both bosses I have had where I work now were/are long married and would never go with another woman. Both have high morals and live by the Golden Rule.
One more funny story..... About a year ago, our division manager, and another devout Christian who is my bosses boss, heard me panicking because I could not find my marriage certificate (I needed it to sign up for social security) and I was worried that it had never been filed, so I said that I would have been "living in sin" for about 33 years. As a Baha'i, this would not have been my fault because it was the responsibility of the Baha'is conducting the ceremony to file it, but I was still worried because I thought I was not legally married. I was really worried until I called my husband and he told me to check with the city where we were living at the time, not where we got married in El Cajon, CA. Then I called the recording clerk in Redding, CA and I found out that it had been filed there. I was so relieved.
The funny thing is that I was joking with the division manager that I was going to go to hell for living in sin all those years, and he did not even seem to take that seriously. Rather, he thought it was so funny and I was bring ridiculous. It was good for a few laughs though, the whole floor got involved, and my boss who is quite austere and rarely laughs was also laughing. I guess those Christians did not understand how seriously we Baha'is take the marriage law because nobody at work knows I am a Baha'i except a few close friends.
One more anecdote.... Before I located the marriage certificate I told my husband that if we had never been married now was his chance to get away. As usual, I could not get the slightest rise out of him.