Need relationship advice. Can you trust one to not cheat?

I have been with the same person for the past 5 years. I have a son from a previous relationship who adores this man. We reccently purchased a house together. My question is can I trust him? He spends quite a bit of time with a female co-worker that he calls ';his buddy';. This woman supposedly has a finace, and yet she is never with hi. My fiance' takes her to lunch and even out for dinner and drinks. I have never met her and he doesn't want to introduce me to her. Last night he went out for a work function and did not come home until 2 in the morning. This female co-worker attended the event with him. He didn't call and his cell was turned off. It would be one thing if it was just me in this relationship, but I have a child to think about. My son considers my fiance' his father. Sorry for going on, but any advice would be welcome.Need relationship advice. Can you trust one to not cheat?
There is nothing wrong with spending time with a female companion, but staying out until 2:00AM is a little extreme. Also there is nothing wrong with going out to lunch with a friend, but this sounds like it's a little more then that. You should sit down and have a talk with him and tell him how you feel about this. And that if he is going to keep spending so much time with her he should atleast interduce you two.Need relationship advice. Can you trust one to not cheat?
Sounds like he is hiding something. I have never been out on business until 2:00 am, unless I was traveling out of town.





Just try to explain your concerns to your fiance, see where it goes. A cheat is not someone to build a life with.
If he won't introduce you to her, that's a red flag. I would push it that you want to meet her or join them for happy hour. Maybe see if he wants to invite her over for a friendly dinner. His behavior sounds questionable.
A man is only as faithful as his options. You should confront him about this. He should not be hiding her from you and you have every right to be suspicious. If he continues to do this then you will have to seriously consider leaving him.