I want to try and be as rational about my reaction to this a possible, so please, be brutally honest about this. I am not an easily hurt person.
Throughout my two year relationship with my boyfriend, there have been a few cases of cheating (that I know of-- he never told me about any of them; I found out on my own each time). Specifically, a girl he slept with, a girl he had a internet relationship with and then, most recently, one of my friends who we will call L. Now, after the last incident (which was roughly three months ago), he has told me it isn't going to happen again and that next time, if he likes another girl, he would just end things. He says that now he appreciates me more and that he loves me.
I was feeling more confident in our relationship until today I got a phone call from a friend who informed me my boyfriend had been talking with L again. I had told him that I didn't feel comfortable with him seeing or talking to her and the fact that he had been talking with her without asking how I would feel about this or at least informing me is making red warning signs flash in my mind.
Am I over-reacting? I know he couldn't have just forgotten to mention it; I had said only yesterday to him that I was considering contacting her due to worry (since our friendship ending, she's been progressing acquiring more and more bad habits).
I want to be able to trust him and for this relationship to work, but it's like I can't put my mind to rest after everything.