<human>: Can you condense the text into a few key points?

My (27/F) husband (29/M) said he accidentally added his ex on FB. Is it even possible to accidentally friend someone in this day and age? Here's a little background...

This is a throwaway account because he would surely know this is me. I was looking at his FB page one night, and it said "recently became friends with (insert ex's name here)." I thought to myself that that's kind of messed up because I know that if the shoe was on the other foot, he would be furious. I'm not one to jump to conclusions, so I casually asked him about it, and sheepishly admitted I felt weird about it. He said "What? No, I'm not friends with her." I told him what I had seen and he paused for some time then said, "Well, I guess maybe I must have accidentally sent her a friend request." He also went on to say that that would be a super messed up thing to do on purpose and that he was sorry. I assumed that meant he would unfriend her and that would be the end of it..... he hasn't. TWO WEEKS later and he hasn't unfriended her. What do I do?

He has also been friending a few other girls that he admits he has never actually met in person, but they know friends of his.... then the explanation just kind of trails off. Again, he gets super weird when guys friend me on FB, demanding to know how I know them (coworkers, etc). Because of this, I tend not to add male friends and avoid situations that would cause him discomfort. I also don't like the idea of inviting temptation by adding an ex.

The more I've thought about the situation, the more messed up it seems. Even if you accidentally add someone, you get a notification when they accept your request, so he would have HAD to have known.

What do you all think? Should I be worried? Do you think it is possible to accidentally friend someone on Facebook? Help please!
<bot>: My [27/F] husband [29/m] claims he "accidentally" added his ex on Facebook.