Affair- do I drop it since I decided to come back?

Megan

My fiance stepped out back in February, there were a lot of things going on but in the end he ended up drunk at a bar messaging 7 other women and the following morning I caught him at his ex friend's with benefits house. I left and was done with everything, but after a lot of begging and a few weeks of counseling I chose to try to work it out.

Now, several months later I am finding myself really struggling. I have watched every move he has made since we have been back together, things caught my attention but I have just let them go without saying anything. For the past week or so I have had this gut feeling that something is off and I can't shake it. We have had several conversations, they all lead to me being told that nothing is going on and he doesn't understand why I feel the way I do or why I am questioning the things I am. I feel crazy!

I got told the other night that I really need to think about whether this is what I want and if I truly see a future and marriage with him. He said that since I decided to come back then if things don't work it's on me this time, esp if we end up getting married.

So I guess my question is....since I did opt to come back should I just let everything go and move on? Should I give him my trust and stop questioning unless he does something to prove me otherwise? Is it really fair that I keep putting him through my struggle when I put myself back into this situation knowing it was going to be hard for me to deal with?