[LS7 427]

I need some advice on what could be a life changing decision. I've suspected for some time now that my wife has been having an affair. The usual signs, phone rings, I answer, someone hangs up. She started going out 'with the girls' a lot recently, although when I ask which girls it is always "Just some friends from work, you don't know them". I always look out for the taxi bringing her home but she always walks down the street although I can hear a car taking off, as if she has got out of the car around the corner. Why? Is it not a taxi? I once picked her mobile phone up just to see what time it was and she went berserk and screamed that I should never touch her phone again and why was I checking up on her. Anyway, I have never approached this subject with my wife. I think deep down I just didn't want to know the truth but last night she went out again and I decided to check on her. I decided I was going to hide behind my camaro which would give me a view of the whole street so I could see which car she gets out of. It was while I was crouched behind my car that I noticed a very small paint chip in front of my rear wheel. So what should I do? Should I take it into a body repair shop or should I buy some touch up paint and try to repair it myself?