To friend?

[Lin3737]

Some background: I have a former friend turned FWB who I no longer speak to. It's the classic story of we had been friends for awhile, started hooking up, he pulled back on the friendship, I wanted to be more than friends, he didn't, etc etc. We initially parted on good terms and agreed to keep in touch but after he started trying to resume the physical part of FWB, I told him if he wanted to be friends he had to leave that out. Never responded.

 

Fast forward a couple years - we remained FB friends but haven't had any contact. Recently I saw on FB that he had become friends with a girl we both attended school with 10+ years ago. The next day, she sent me a friend request. It's not completely out of the question since we did know each other from school. However, I thought that the timing was really strange. I assumed that FB had either suggested me to her in "People you may know" or she had seen my name in my former FWB's friend list. However, she doesn't seem to have added anyone else from our school. Other than my former FWB, she and I only have one mutual friend. I found it really strange that of all the people we went to school with, she only singled me out to add. Especially since I don't recall us being that close of friends ever. Also, I happened to be on FB at the time she sent the request to me, which was late on a weekend night, and saw that my former FWB was online at that same moment as well.

 

So the question is to accept friend request or ignore it. It's sat in my inbox for 2 days now and she still hasn't added any other mutual friends from school. The whole thing, along with the timing, seems suspicious to me. If I add her, I might be able to figure out why she added me of all people in the first place. Also, I could see what her and my former FWB are up to. I always got the feeling that he liked to "collect" girls from different stages of his life and then cycle through them when he was lonely. I wonder if that's his game here as well. On the other hand, if I accept her request he could think I am stalking him or something. If I don't add her, it would just show her that whatever she's up to, I'm not interested in playing. I might be reading too much into this but I don't believe in coincidences and I've been burned too many times in the past. This is all making me think that I should also unfriend my former FWB as well. Does this seem weird to anyone else? Thoughts on what to do?