Have exs mom on FB someone asked if she was single on a photo of them

[Canadian731]

So, me and my ex of 4 years broke up about 3 months ago, i'm adjusting really well, but I am still close with her mom, and I have her mom and sister on facebook, every once in awhile I will see a picture of them, a status about her and it doesn't really get to me. But tonight I saw a picture of her and her mom on facebook and I see that someone had posted on the picture asking if my ex was single, I don't know why since he is 35 years old or something lol plus that's a weird thing to ask her mom. But for some reason this really got to me, I am not sure how it makes me feel. I know I still have feelings for her, not so much romantic feelings but still feel like she played a big part in my life and its hard to let go completely. I haven't talked to her in 2 months and I dont plan to anytime soon. basically what I am asking is, should I remove her mother to prevent further confusion and hurt? I have talked to many people and they say that our relationship ending shouldn't effect the one I have with her mother and sister but sometimes it just hurts to think about how things wont be the same when I see them. I have seen her mom once and it just put me in such a weird state and I was totally out of it.